Is CVE-2026-59310 actively exploited?

Yes. Previdian has observed exploitation attempts targeting this CVE. Confidence is confirmed.

What exploitation activity has Previdian observed?

Previdian sensors have observed 12 exploitation attempts, 5 unique attacker IPs, and 5 countries targeting CVE-2026-59310. First observed Aug 20, 2026; last observed Oct 04, 2026.

Which versions are affected?

CVE-2026-59310 affects VMware Cloud Foundation and 4 other products. Previdian lists 13 version rows; examples include 9.1.x.x, 9.0.x.x, and 5.x.

How should organizations remediate it?

Prioritize immediate patching and validate internet-facing exposure. Monitor for matching exploitation attempts in your environment.

Yes. CVE-2026-59310 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. Added to Previdian from a trusted third-party report 6 days before CISA listed it.

CVE-2026-59310 Exploitation Observed — VMware

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2026-59310 is an unauthenticated vCenter directory-traversal vulnerability affecting VMware Cloud Foundation and 4 other products. VMware vCenter contains a directory traversal vulnerability in the Syslog...

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?

VMware / Cloud Foundation 9.1.x.x.

What should we do?

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

Overview

vCenter directory-traversal vulnerability

VMware vCenter contains a directory traversal vulnerability in the Syslog server. A malicious actor with network access to vCenter may exploit this issue to execute arbitrary code.

Vendor Product Affected Status

VMware Affected

Cloud Foundation

9.1.x.x 9.0.x.x 5.x

Affected

VMware Affected

vSphere Foundation

9.1.x.x 9.0.x.x

Affected

VMware Affected

vCenter

Before 9.1.0.0300 Before 9.0.2.0100 Before 8.0 U3k

Affected

VMware Affected

Telco Cloud Infrastructure

3.0

Affected

VMware Affected

Telco Cloud Platform

5.1.x 5.0.x 4.x 3.0

Affected

Published: 30 Jul 2026
Exploitation Reported: 12 Aug 2026
Attack vector: Remote
Complexity: Low
Privileges: None
User interaction: None

CVE References

CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2026-59310
support.broadcom.com/web/ecx/support-content-notification/-/exter... support.broadcom.com · CVE Record https://support.broadcom.com/web/ecx/support-content-notification/-/e...

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

The Hacker News

Recorded 12 Aug 2026

A trusted third party reported exploitation.

Active exploitation observed

Previdian sensor

First observed 20 Aug 2026

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

Proof of concept available

GitHub

Recorded 17 Aug 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
The Hacker News First	2026-08-12 10:47 UTC
BleepingComputer	2026-08-13 16:40 UTC
CISA	2026-08-18 16:52 UTC
CVE	2026-08-18 17:51 UTC
Previdian Sensors	2026-09-22 10:39 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.

12

Attempts observed

5

Unique attacker IPs

5

Attacker countries

FR · HK · IR · NL · US

1

Sensors observed

CVE-2026-59310 exploitation attempts over the last 53 days

Daily events observed by Previdian sensors

Updated 10 Oct 2026

0

1

0

5

0

1

0

3

0

2

0

19 Aug 30 Aug 10 Sep 21 Sep 10 Oct

First observed 20 Aug 2026 · Last observed 04 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: 4; 0; 1

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

Scanner coverage

No scanner integrations recorded yet.

Virtual patch status

No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

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

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

2.6%

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

Weaknesses

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE-22

Recent mention · The Hacker News

17 Sep 2026

ThreatsDay: Self-Rewriting Agents, 800+ Flaws Patched, Insider SIM Swaps and 22 More New Stories

Attackers keep finding new keys. The funny part is that defenders keep inventing where to store them. This week, those keys sit in AI tools, exposed services, old bugs, weak logins, and software sold like a monthly subscription. Some attacks use new tricks. Others just reuse...

Read full advisory

All Mentions

Recent mention · The Hacker News

ThreatsDay: Self-Rewriting Agents, 800+ Flaws Patched, Insider SIM Swaps and 22 More New Stories

The Hacker News · 17 Sep 2026

Attackers keep finding new keys. The funny part is that defenders keep inventing where to store them. This week, those keys sit in AI tools, exposed services, old bugs, weak logins, and software sold like a monthly subscription. Some attacks use new tricks. Others just reuse what was already lying around. Both work often enough. So the threat landscape is not getting cleaner. It is just

Recent mention · RecordedFuture

August 2026 CVE Landscape

RecordedFuture · 08 Sep 2026

In August 2026, Insikt Group® identified 73 high-impact vulnerabilities that should be prioritized for remediation, 43 of which had a Very Critical Recorded Future Risk Score. This represents a 14% decrease from last month.

Recent mention · The Hacker News

Suspected China-Nexus Actor Exploits VMware vCenter Flaw, Deploys Babuk-Derived Ransomware

The Hacker News · 17 Aug 2026

Cybersecurity researchers have attributed the exploitation of a newly patched security flaw in Broadcom VMware vCenter to a suspected China-nexus advanced persistent threat (APT). The attacks involve the exploitation of CVE-2026-59310 (CVSS score: 9.8), a severe directory-traversal vulnerability in the VMware vCenter server that could be weaponized by a malicious actor to execute arbitrary code

Recent mention · BleepingComputer

Critical VMware vCenter RCE flaw exploited for reverse SSH access

BleepingComputer · 13 Aug 2026

A recently patched critical vulnerability (CVE-2026-59310) in VMware vCenter Syslog Server is being exploited in an active campaign to deploy a reverse SSH tool for persistence and remote access. [...]

Recent mention · The Hacker News

Attackers Exploit VMware vCenter Vulnerability to Gain Persistent Remote Access

The Hacker News · 12 Aug 2026

Threat actors have begun to actively exploit a recently patched critical security flaw in Broadcom VMware vCenter, according to new findings from QUIRSO. The vulnerability in question is CVE-2026-59310 (CVSS score: 9.8), a directory-traversal vulnerability in the VMware vCenter server that a malicious actor with network access can exploit to execute arbitrary code. Patches for the flaw were

Recent mention · Rapid7

Critical VMware vCenter Vulnerabilities Allow Authentication Bypass and Remote Code Execution (CVE-2026-59309, CVE-2026-59310)

Rapid7 · 30 Jul 2026

OverviewOn July 29, 2026, Broadcom published security advisory VMSA-2026-0006 addressing multiple vulnerabilities in several VMWare products. Included in the advisory are two critical remotely exploitable vulnerabilities affecting VMware vCenter Server: CVE-2026-59309 and CVE-2026-59310. Both vulnerabilities carry CVSSv3.1 base scores of 9.8 and can be exploited by unauthenticated attackers with network access to a vulnerable vCenter Server.CVECVSSv3.1Description SummaryCVE-2026-593099.8 (Critical)An authentication bypass vulnerability in the VMware Directory Service of vCenter that could...

Potential Proof of Concepts

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

vpxuser/CVE-2026-59310

github · Created 2026-09-29 01:54:33 UTC · 0 stars · AI assessment 90%

ChinaRan0/CVE-2026-59310-POC 的优化版本。子命令、一次性 cron、带远端 PTY 的交互 shell。仅限授权测试。

ChinaRan0/CVE-2026-59310-POC

github · Created 2026-09-25 16:05:26 UTC · 0 stars · AI assessment 90%

CVE-2026-59310-POC 仅用于自测，请勿用于攻击

BiuTrap/CVE-2026-59310

github · Created 2026-08-17 10:09:51 UTC · 0 stars · AI assessment 85%

CVE-2026-59310 PoC

HORKimhab/CVE-2026-59310

github · Created 2026-08-17 07:51:46 UTC · 0 stars · AI assessment 90%

CVE-2026-59310

Timeline

From disclosure to observed exploitation

20 Aug 2026
06:32 UTC

Indicators of compromise added (5)

Indicators of compromise recorded
20 Aug 2026
06:32 UTC

Observed by Previdian sensors

Evidence-backed exploitation signal
18 Aug 2026
17:51 UTC

KEV confirmed by CVE

Exploitation attested by an external source
18 Aug 2026
16:52 UTC

Added to CISA KEV

Listed in the CISA Known Exploited Vulnerabilities catalog
17 Aug 2026
07:51 UTC

Public PoC available

Public proof-of-concept code published
13 Aug 2026
16:40 UTC

KEV confirmed by BleepingComputer

Exploitation attested by an external source
12 Aug 2026
10:47 UTC

Added to Previdian KEV Feed

High-confidence, third-party attested exploitation
30 Jul 2026
12:19 UTC

CVE published

Vulnerability disclosed publicly
04 Jul 2026
18:13 UTC

CVE ID reserved

Identifier reserved by the CNA

Pro API

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Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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Evidence confidence and provenance
First-party sensor telemetry
PoC and scanner references
Affected versions and enrichment
Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2026-59310

Free JSON includes basic KEV fields

{
  "cve_id": "CVE-2026-59310",
  "confidence": "Confirmed",
  "cvss_score": 9.8,
  "cvss_estimated": false,
  "epss_score": 0.02565,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": true
  },
  "sensor_telemetry": { "attempts": 12, "sensors": 1 }
}

CVE-2026-59310

vCenter directory-traversal vulnerability

Tags

CVE References

Exploited in the wild

Active exploitation observed

Proof of concept available

Known exploited vulnerability sources

Observed signals

Scanner coverage

Virtual patch status

Attacker IP Indicators

Weaknesses

ThreatsDay: Self-Rewriting Agents, 800+ Flaws Patched, Insider SIM Swaps and 22 More New Stories

All Mentions

Potential Proof of Concepts

Indicators of compromise added (5)

Observed by Previdian sensors

KEV confirmed by CVE

Added to CISA KEV

Public PoC available

KEV confirmed by BleepingComputer

Added to Previdian KEV Feed

CVE published

CVE ID reserved

Automate this intelligence