Vulnerability report

Active exploitation observed Confirmed confidence In CISA KEV

CVE-2026-35273

PeopleSoft Enterprise PeopleTools

Oracle / PeopleSoft Enterprise PeopleTools · 8.61

Watch CVE-2026-35273 Browse KEV feed
Severity
CVSS 9.8 · Critical
Confidence
Confirmed
Exploit status
Observed in sensors
EPSS
9.4%
First observed
14 Jun 2026
Last observed
08 Oct 2026

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2026-35273 is an unauthenticated vulnerability affecting Oracle PeopleSoft Enterprise PeopleTools. Vulnerability in the PeopleSoft Enterprise PeopleTools product of Oracle PeopleSoft (component: Updates...

Is it exploited?

Yes. Previdian sensors observed exploitation attempts with confirmed confidence. Listed in CISA KEV. Also confirmed by third-party sources.

Who is affected?

Oracle / PeopleSoft Enterprise PeopleTools 8.61.

What should we do?

Patch immediately, validate internet-facing exposure, and monitor for matching requests.

Overview

PeopleSoft Enterprise PeopleTools

Vulnerability in the PeopleSoft Enterprise PeopleTools product of Oracle PeopleSoft (component: Updates Environment Management). Supported versions that are affected are 8.61 and 8.62. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise PeopleSoft Enterprise PeopleTools.

Successful attacks of this vulnerability can result in takeover of PeopleSoft Enterprise PeopleTools. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Oracle Corporation Affected
PeopleSoft Enterprise PeopleTools
8.61 8.62
View vendor advisory (opens in new tab)
Published
11 Jun 2026
Exploitation Reported
11 Jun 2026
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
None

Tags

malware cisa nuclei_scanner

Previdian Analysis Notes

Analyst-curated context on exploitation evidence and operational relevance.

Based on Previdian honeypot logs and the Mandiant report, we believe this is potentially the CVE-2026-35273 activity chain. Actors typically spray two parallel vectors in the same session; neither is proven to depend on the other. 1. Primary vector — PSEMHUB update-source poisoning (CVE-2026-35273) Attacker sends POST /PSEMHUB/hub with environment-management actions (updateEnvironment, fetchEnvironment, syncEnvironment) and an attacker-controlled sourceURL (e.g. hxxp://attacker_ip:9999/hub_update). 1.1 The hub fetches and processes environment metadata/updates from that sourceURL (missing authentication on this operation). 1.2 Malicious content is staged on disk under PSEMHUB.war/envmetadata/ (transactions, environment XML). 1.3 RCE follows when that content is processed. Mandiant observed XMLDecoder abuse via envmetadata/data/environment/*.xml on app restart, plus unexpected .jsp webshells. Weaponized content is usually hosted at sourceURL, not embedded as shellcode in the POST body. The HTTP request is the trigger. 2. Alternate / parallel vector — Integration Broker SSRF POST /PSIGW/HttpListeningConnector with loopback or internal targets. This is a separate Integration Broker SSRF primitive, often fired alongside vector 1 in automated PoC spray. It is not required after PSEMHUB RCE. Payloads seen in the wild include: EnvironmentManagement XML (often sprayed to both /PSEMHUB/hub and /PSIGW/HttpListeningConnector): <Envelope><Body><EnvironmentManagement> <sourceURL>hxxp://127.0.0.1:7001/console</sourceURL> </EnvironmentManagement></Body></Envelope> IBRequest / HttpTargetConnector (Integration Broker native SSRF gadget) with URL and Method connector parameters — e.g. POST to hxxp://127.0.0.1:8000/PSEMHUB/hub with minimal body content. PoCs may label the operation CVE-2026-35273 in ExternalOperationName; that reflects campaign tooling, not proof that PSIGW SSRF is the same CVE as PSEMHUB. Common SSRF targets include: - WebLogic admin console (127[.]0.0.1:7001/console) - Internal PeopleSoft services (127[.]0.0.1:51500/pspc/services/AdminService) - Cloud metadata endpoint (169[.]254.169.254) - Internal PSEMHUB hub (127[.]0.0.1:<port>/PSEMHUB/hub) — PSIGW used to reach hub on loopback when it is not directly exposed; may be probing or partial delivery, not a full hubAction + sourceURL chain by itself

CVE References

  • CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2026-35273
  • Oracle Advisory oracle.com · Vendor Advisory https://www.oracle.com/security-alerts/alert-cve-2026-35273.html

Exploitation evidence

Why Previdian marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

BleepingComputer

Recorded 11 Jun 2026

A trusted third party reported exploitation.

Active exploitation observed

Previdian sensor

First observed 14 Jun 2026

Previdian first observed exploitation attempts targeting this vulnerability in our honeypot sensors.

Used in malware

BleepingComputer

Recorded 12 Jun 2026

Malware families have been linked to exploitation of this CVE.

Proof of concept available

GitHub

Recorded 12 Jun 2026

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

Learn about Pro API access
Source Added
BleepingComputer First 2026-06-11 20:20 UTC
CISA 2026-06-12 00:00 UTC
Rapid7 2026-06-12 14:20 UTC
CVE 2026-06-12 18:01 UTC
All CISA Advisories 2026-06-12 18:20 UTC
Previdian Sensors 2026-06-14 13:47 UTC
Tenable Blog 2026-06-18 10:20 UTC
The Shadowserver 2026-07-10 00:00 UTC

Operational indicators for this CVE are listed under Detection.

Sensor telemetry

First-party evidence of exploitation activity

Previdian sensors recorded exploitation attempts targeting this vulnerability. The cards and chart show volume, unique attackers, and daily activity.

578

Attempts observed

60

Unique attacker IPs

23

Attacker countries

AU · BG · BY · CH · CN · CY · DE · DK · FR · HK · ID · IN · JP · KE · LT · MY · NL · PK · RU · SC · SG · US · VN

15

Sensors observed

CVE-2026-35273 exploitation attempts over the last 89 days

Daily events observed by Previdian sensors

Updated 09 Oct 2026

0
1
0
0
0
0
2
0
0
0
2
7
0
0
0
0
12
2
0
0
1
18
1
0
0
2
0
0
0
0
2
0
0
0
0
4
0
0
1
1
2
0
21
0
0
0
0
0
1
0
0
0
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0
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1
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1
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40
1
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361
3
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0
6
33
13
5
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0
13 Jul 31 Jul 18 Aug 5 Sep 9 Oct

First observed 14 Jun 2026 · Last observed 08 Oct 2026

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Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
User-Agents
Callback hosts
8
57
5

Request targets and User-Agents available in Pro. Callback host details available in Enterprise.

Virtual patch status

Previdian virtual patch guidance is available for this CVE.

AWS WAF Cloudflare ModSecurity

Attacker IP Indicators

Attacker IP indicators observed · available in Pro and Enterprise.

Sensor-derived attacker IP indicators are available to Pro and Enterprise accounts under Detection and through the Pro API.

Learn about Pro API access

Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner Reference Detected
Nuclei https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-35273.yaml 19 Jun 2026

Virtual Patch Detail

Compensating WAF rules for this CVE.

Available

Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to Previdian Enterprise users.

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Risk and context

Severity, weaknesses, and research context

CVSS v3.1

9.8 Critical

Potential damage if exploited. Separate from whether attackers are using it.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

9.4%

Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.

Weaknesses

Missing Authentication for Critical Function CWE-306

Recent mention · The Hacker News

FBI Removes Accenture Contractor After Patch Failure Led to ShinyHunters Breach

Ravie LakshmananOct 06, 2026 The U.S. Federal Bureau of Investigation (FBI) has removed an Accenture contractor for their alleged role in a ShinyHunters-breach that led to the theft of personal details of thousands of bureau employees. That's according to a report from...

Read full advisory

All Mentions

Recent mention · The Hacker News

FBI Removes Accenture Contractor After Patch Failure Led to ShinyHunters Breach

The Hacker News · 06 Oct 2026

Ravie LakshmananOct 06, 2026 The U.S. Federal Bureau of Investigation (FBI) has removed an Accenture contractor for their alleged role in a ShinyHunters-breach that led to the theft of personal details of thousands of bureau employees. That's according to a report from Reuters, citing two sources familiar with the matter. "To date, our review has determined that the incident occurred as the result of a security failure ​of a platform managed by a third-party organization — after a contractor failed to implement a security patch explicitly issued to secure the ​platform," Brett Leatherman,...

Recent mention · The Hacker News

Dutch Police Arrest 24-Year-Old Amsterdam Man in ShinyHunters Investigation

The Hacker News · 29 Sep 2026

Ravie LakshmananSep 29, 2026United States Dutch authorities have confirmed that they arrested a 24-year-old man from Amsterdam in connection with the ShinyHunters group. "It is true that this month a 24-year-old man from Amsterdam was arrested in an investigation into the hacker group ShinyHunters," the Politie Landelijke Opsporing en Interventies said in an X post Monday. Police said the individual is expected to appear before the Rotterdam District Court on September 29, 2026. Although law enforcement officials did not disclose any additional details, independent security journalist...

Recent mention · The Record

ShinyHunters exploiting workarounds for Oracle PeopleSoft bug, Mandiant warns

The Record · 28 Sep 2026

A vulnerability in a popular line of products from Oracle is being used in a new campaign by the prolific ShinyHunters hacking group, which recently claimed credit for an attack on the FBI’s jobs site.

Recent mention · CyberInsider

Google warns ShinyHunters is mass-exploiting Oracle PeopleSoft flaw

CyberInsider · 26 Sep 2026

Google’s Mandiant and Threat Intelligence Group (GTIG) have observed ShinyHunters launching a renewed mass-exploitation campaign against vulnerable Oracle PeopleSoft servers, compromising dozens of systems across multiple industries. The activity supports recent claims from the cybercrime group that it had resumed exploiting PeopleSoft environments against a broader range of targets. The threat group, tracked by Google … The post Google warns ShinyHunters is mass-exploiting Oracle PeopleSoft flaw appeared first on CyberInsider.

Recent mention · The Hacker News

Attackers Bypass WAFs to Exploit Oracle PeopleSoft Flaw and Deploy Web Shells

The Hacker News · 26 Sep 2026

Ravie LakshmananSep 26, 2026Vulnerability / Web Security Google is warning of renewed mass exploitation of a known security vulnerability in Oracle PeopleSoft as part of a campaign targeting multiple sectors globally. The ShinyHunters-linked activity involves the weaponization of CVE-2026-35273 (CVSS score: 9.8), a critical security flaw that could result in unauthenticated remote code execution. The vulnerability was first exploited as a zero-day in attacks against academic institutions to conduct reconnaissance, deploy remote access software like MeshCentral agent for persistence, move...

Recent mention · Google Threat Intelligence

Introduction  As an update to the June 2026 post, ShinyHunters Targets Education Sector with Oracle PeopleSoft Exploit, Mandiant and Google Threat...

Google Threat Intelligence · 25 Sep 2026

Introduction  As an update to the June 2026 post, ShinyHunters Targets Education Sector with Oracle PeopleSoft Exploit, Mandiant and Google Threat Intelligence Group (GTIG) have identified renewed mass exploitation of CVE-2026-35273 by UNC6240 (ShinyHunters), along with expanded global targeting across multiple sectors. In June, the threat actor exploited this vulnerability as a zero-day predominantly against academic institutions. This new wave of activity stems from UNC6240 modifying its exploit to bypass web application firewall (WAF) rules blocking the vulnerable Environment Management...

Recent mention · SOCRadar

ShinyHunters Claims Access to FBI Systems

SOCRadar · 24 Sep 2026

ShinyHunters Claims Access to FBI Systems Days after hijacking Clop's Dark Web leak site, ShinyHunters claims it breached the FBI, defaced part of its recruitment website, and stole sensitive information belonging to emp

Recent mention · Security Affairs

ShinyHunters claims FBI breach after alleged PeopleSoft zero-day attack

Security Affairs · 23 Sep 2026

ShinyHunters claims FBI breach via PeopleSoft zero-day, steals staff data; FBI investigating, no confirmation yet. The popular cybercrime group ShinyHunters is claiming that it breached the U.S. Federal Bureau of Investigation (FBI) and stole sensitive information belonging to FBI employees and job applicants. The group says the operation was not financially motivated and was instead […]

Recent mention · The Hacker News

ShinyHunters Claims FBI Breach, Says It Stole Data on Agents and Job Applicants

The Hacker News · 23 Sep 2026

Ravie LakshmananSep 23, 2026Data Breach / Cybercrime The cyber extortion group known as ShinyHunters on Tuesday claimed it had breached the U.S. Federal Bureau of Investigation and stolen data belonging to current and former employees at the agency. "We have compromised the FBI. We hold very sensitive data on almost ALL FBI Agents and individuals who filed an application with the FBI for a job," the group said in a statement posted on their dark web site. "Whether it be a Special Agent or any other role within your agency. The following FBI services were compromised: Criminal Justice...

Recent mention · Zero Day Initiative Published Advisories

ZDI-26-387: Oracle PeopleSoft HttpListeningConnector Server-Side Request Forgery Vulnerability

Zero Day Initiative Published Advisories · 24 Jun 2026

This vulnerability allows remote attackers to initiate arbitrary server-side requests on affected installations of Oracle PeopleSoft. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 9.3. The following CVEs are assigned: CVE-2026-35273.

Recent mention · Zero Day Initiative Published Advisories

ZDI-26-388: Oracle PeopleSoft HubMBeanPersistance Deserialization of Untrusted Data Remote Code Execution Vulnerability

Zero Day Initiative Published Advisories · 24 Jun 2026

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Oracle PeopleSoft. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The ZDI has assigned a CVSS rating of 7.5. The following CVEs are assigned: CVE-2026-35273.

Recent mention · Zero Day Initiative Published Advisories

ZDI-26-389: Oracle PeopleSoft ExecuteProcessActivityCommand External Control of File Path Remote Code Execution Vulnerability

Zero Day Initiative Published Advisories · 24 Jun 2026

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Oracle PeopleSoft. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The ZDI has assigned a CVSS rating of 8.8. The following CVEs are assigned: CVE-2026-35273.

Recent mention · Tenable Blog

Oracle June 2026 Critical Security Patch Update Addresses 243 CVEs (CVE-2026-35273)

Tenable Blog · 18 Jun 2026

Oracle addresses 243 CVEs in its June 2026 Critical Security Patch Update with 245 patches, including 122 critical updates.Key TakeawaysThe June 2026 Critical Security Patch Update (CSPU) contains fixes for 243 unique CVEs in 245 security updates122 issues (49.8% of all patches) were assigned a critical severity ratingOracle Fusion Middleware received the highest number of patches at 106, accounting for 43.3% of all patchesBackgroundOn June 16, Oracle released its Critical Security Patch Update (CSPU) for June 2026. Beginning in May 2026, Oracle introduced CSPUs as a monthly release cycle...

Recent mention · CyberInsider

Google warns of Oracle PeopleSoft attacks hitting universities

CyberInsider · 12 Jun 2026

Google's Mandiant and Google Threat Intelligence Group (GTIG) say the ShinyHunters extortion group exploited a critical Oracle PeopleSoft vulnerability as a zero-day to compromise education institutes. The activity, tracked as UNC6240, was observed between May 27 and June 9 and involved exploitation of CVE-2026-35273, a critical remote code execution flaw in the Environment Management component … The post Google warns of Oracle PeopleSoft attacks hitting universities appeared first on CyberInsider.

Recent mention · Rapid7

Active Exploitation of Oracle PeopleSoft Zero-Day (CVE-2026-35273)

Rapid7 · 12 Jun 2026

OverviewOn June 10, 2026, Oracle published a security alert for CVE-2026-35273, a critical vulnerability in the Updates Environment Management component of PeopleSoft Enterprise PeopleTools. Oracle released an out-of-band patch the same day as the advisory, underscoring the urgency of remediation. The vulnerability has a CVSSv3.1 score of 9.8 and is remotely exploitable without authentication. Per the vendor advisory, successful exploitation may result in remote code execution (RCE). TrendAI has classified the underlying flaw as a server-side request forgery (CWE-918). PeopleTools versions...

Recent mention · All CISA Advisories

CISA Adds One Known Exploited Vulnerability to Catalog

All CISA Advisories · 12 Jun 2026

CISA has added one new vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2026-35273 Oracle PeopleSoft Enterprise PeopleTools Missing Authentication for Critical Function Vulnerability This type of vulnerability is a frequent attack vector for malicious cyber actors and poses significant risks to the federal enterprise. Binding Operational Directive (BOD) 26-04: Prioritizing Security Updates Based on Risk establishes vulnerability management requirements for Federal Civilian Executive Branch (FCEB) agencies, updating BOD...

Recent mention · The Hacker News

ShinyHunters Exploits Oracle PeopleSoft Zero-Day (CVE-2026-35273) to Breach Universities

The Hacker News · 11 Jun 2026

The ShinyHunters extortion crew exploited an unpatched flaw in Oracle PeopleSoft to break into enterprise systems, steal data, and demand payment to keep it private. The campaign hit universities hardest. Google's Mandiant attributes it to the group it tracks as UNC6240, and dates the activity between May 27 and June 9. Oracle did not publish its advisory until June 10, so the bug was a

Recent mention · DarkWebInformer

Critical Oracle PeopleSoft PeopleTools RCE Exposes Enterprise Systems (CVE-2026-35273)

DarkWebInformer · 11 Jun 2026

CVE-2026-35273 is a critical unauthenticated remote code execution vulnerability in Oracle PeopleSoft Enterprise PeopleTools. Rated CVSS 9.8, the flaw affects PeopleTools versions 8.61 and 8.62 and requires immediate mitigation.

Recent mention · BleepingComputer

Oracle mitigates PeopleSoft zero-day exploited in data theft attacks

BleepingComputer · 11 Jun 2026

Oracle is warning about a critical PeopleSoft Suite zero-day vulnerability tracked as CVE-2026-35273 that allows unauthenticated remote code execution, with the flaw actively exploited in ShinyHunter data theft attacks. [...]

Recent mention · Google Threat Intelligence

Introduction Mandiant and Google Threat Intelligence Group (GTIG) have identified an active compromise and extortion campaign attributed to UNC6240...

Google Threat Intelligence · 11 Jun 2026

Introduction Mandiant and Google Threat Intelligence Group (GTIG) have identified an active compromise and extortion campaign attributed to UNC6240 (ShinyHunters) targeting Oracle PeopleSoft application infrastructure. The activity was observed between May 27, 2026, and June 9, 2026 and is consistent with the exploitation of CVE-2026-35273, a critical remote code execution vulnerability (CVSS 9.8) in the Environment Management component. The exploitation of this vulnerability directly aligns with the observed targeting of Environment Management Hub (PSEMHUB) endpoints. Because this activity...

Recent mention · Oracle Security Alerts

Oracle Security Alert Advisory - CVE-2026-35273

Oracle Security Alerts · 11 Jun 2026

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

Oracle PeopleSoft PeopleTools PSEMHUB - Pre-Auth Java Deserialization RCE

nuclei · Created Unknown

Timeline

From disclosure to observed exploitation

  1. 00:00 UTC

    KEV confirmed by The Shadowserver

    Exploitation attested by an external source

  2. 14:21 UTC

    Virtual patch available

    Compensating WAF rule available to block exploitation

  3. 04:30 UTC

    Public PoC available

    Public proof-of-concept code published

  4. 04:30 UTC

    Nuclei template available

    Scanner coverage available

  5. 10:20 UTC

    KEV confirmed by Tenable Blog

    Exploitation attested by an external source

  6. 13:47 UTC

    Indicators of compromise added (140)

    Indicators of compromise recorded

  7. 13:47 UTC

    Observed by Previdian sensors

    Evidence-backed exploitation signal

  8. 18:20 UTC

    KEV confirmed by All CISA Advisories

    Exploitation attested by an external source

  9. 18:01 UTC

    KEV confirmed by CVE

    Exploitation attested by an external source

  10. 14:20 UTC

    KEV confirmed by Rapid7

    Exploitation attested by an external source

  11. 00:00 UTC

    Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  12. 00:00 UTC

    First public exploitation report

    Exploit observed in malware

  13. 20:20 UTC

    Added to Previdian KEV Feed

    High-confidence, third-party attested exploitation

  14. 02:25 UTC

    CVE published

    Vulnerability disclosed publicly

  15. 20:03 UTC

    CVE ID reserved

    Identifier reserved by the CNA

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  • Evidence confidence and provenance
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GET /api/v2/pro/kevs/CVE-2026-35273

Free JSON includes basic KEV fields 
{
  "cve_id": "CVE-2026-35273",
  "confidence": "Confirmed",
  "cvss_score": 9.8,
  "cvss_estimated": false,
  "epss_score": 0.09444,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": true
  },
  "sensor_telemetry": { "attempts": 578, "sensors": 15 }
}