Vulnerability report

Exploited in the wild Confirmed confidence In CISA KEV

CVE-2023-27532

Veeam Backup & Replication

Veeam Backup & Replication · Fixed Versions: v12 (build 12.0.0.1420 P20230223)

Watch CVE-2023-27532 Browse KEV feed
Severity
CVSS 7.5 · High
Confidence
Confirmed
Exploit status
Exploited in the wild
EPSS
80.6%
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2023-27532 is an unauthenticated vulnerability affecting Veeam Backup & Replication. Vulnerability in Veeam Backup & Replication component allows encrypted credentials stored in the configuration database to be...

Is it exploited?

Yes. Previdian tracks this CVE as a known exploited vulnerability. Confidence is confirmed. Listed in CISA KEV. Also confirmed by third-party sources.

Who is affected?

Veeam Backup & Replication fixed versions: v12 (build 12.0.0.1420 p20230223).

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

Veeam Backup & Replication

Vulnerability in Veeam Backup & Replication component allows encrypted credentials stored in the configuration database to be obtained. This may lead to gaining access to the backup infrastructure hosts.

n/a Affected
Veeam Backup & Replication
Fixed Versions: v12 (build 12.0.0.1420 P20230223) 11a (build 11.0.1.1261 P20230227)
Published
10 Mar 2023
Exploitation Reported
22 Aug 2023
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
None

Tags

ransomware cisa nessus_scanner malware

CVE References

  • CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2023-27532
  • veeam.com/kb4424 veeam.com · CVE Record https://www.veeam.com/kb4424

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

CISA

Recorded 22 Aug 2023

A trusted third party reported exploitation.

Used in malware

CISA

Recorded 22 Aug 2023

Malware families have been linked to exploitation of this CVE.

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
CISA First 2023-08-22 00:00 UTC
The Hacker News 2026-10-20 16:32 UTC

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
0
0
0

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

Virtual patch status

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

Learn about virtual patches →

Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner Reference Detected
Nessus https://www.tenable.com/plugins/nessus/173398 02 Jun 2025

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

7.5 High

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:N/A:N

EPSS

80.6%

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

ThreatsDay: AI Secrets Leak, PingCAP Source Theft, Signal Hang-Up Flaw, Laravel Auth Bypass + 21 More

Ravie LakshmananOct 22, 2026Hacking News / Cybersecurity News This week has already been rough for cybersecurity. Critical PHP and GitLab RCE flaws, serious Linux security bugs, compromised eMudhra certificates, a Node.js RCE flaw, a hacked LiteLLM release, and hundreds of...

Read full advisory

All Mentions

Recent mention · The Hacker News

ThreatsDay: AI Secrets Leak, PingCAP Source Theft, Signal Hang-Up Flaw, Laravel Auth Bypass + 21 More

The Hacker News · 22 Oct 2026

Ravie LakshmananOct 22, 2026Hacking News / Cybersecurity News This week has already been rough for cybersecurity. Critical PHP and GitLab RCE flaws, serious Linux security bugs, compromised eMudhra certificates, a Node.js RCE flaw, a hacked LiteLLM release, and hundreds of hijacked Tor relays. That's a lot to deal with in just a few days. And the week isn't even over yet. But those big headlines are only half the story. Stolen passwords, exposed databases, broken login checks, and trusted tools being turned against their users are causing trouble too. Some attacks are clever. Others work...

Recent mention · The Record

FBI says SafePay ransomware gang ‘among most active’ with more than 600 victims since 2024

The Record · 20 Oct 2026

The FBI and cyber agencies in the UK and Germany said SafePay is targeting businesses and critical infrastructure by guessing passwords, exploiting vulnerabilities and using phishing attacks.

Recent mention · TheRegister

Palo Alto's firewall OS has been under attack from multiple ransomware groups since June

TheRegister · 20 Oct 2026

Unit 42 investigates network compromises across numerous industries

Recent mention · SOCRadar

INC and The Gentlemen Ransomware: Exposed AI Infrastructure

SOCRadar · 20 Oct 2026

SOCRadar Threat Research Unit (STRU) has uncovered an AI-driven intrusion ecosystem run by affiliates of the INC Ransomware and The Gentlemen Ransomware groups. A single publicly accessible command-and-control server exposed the operators’ AI session databases, their central knowledge base and the source code of Phantom, a new “Autonomous Red Team Kill Chain Framework”. Configuration files, […]

Recent mention · The Hacker News

Qilin and INC Ransomware Groups Exploit Palo Alto Networks Flaw to Bypass MFA

The Hacker News · 20 Oct 2026

Ravie LakshmananOct 20, 2026Vulnerability / Network Security Palo Alto Networks has disclosed that it's continuing to observe exploitation of a now-patched security flaw impacting PAN-OS and Prisma Access by ransomware actors. The activity relates to CVE-2026-0257 (CVSS score: 7.8), an authentication bypass flaw that could be exploited by bad actors to set up unauthorized VPN connections. It was patched by Palo Alto Networks in May 2026 and was added by the U.S. Cybersecurity and Infrastructure Security Agency (CSIA) to its Known Exploited Vulnerabilities (KEV) catalog on May 13, 2026....

Timeline

From disclosure to observed exploitation

  1. 16:32 UTC

    KEV confirmed by The Hacker News

    Exploitation attested by an external source

  2. 09:26 UTC

    Nessus plugin available

    Scanner coverage available

  3. 00:00 UTC

    Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  4. 00:00 UTC

    First public exploitation report

    Exploit observed in malware

  5. 00:00 UTC

    CVE published

    Vulnerability disclosed publicly

  6. 00:00 UTC

    CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

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-2023-27532

Sample API response 
{
  "cve_id": "CVE-2023-27532",
  "confidence": "Confirmed",
  "cvss_score": 7.5,
  "cvss_estimated": false,
  "epss_score": 0.80599,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}