Vulnerability report

Exploited in the wild Confirmed confidence In CISA KEV

CVE-2024-40711

Backup and Recovery Deserialization

Veeam / Backup and Recovery · 0 to <= 12.2.0.334

Watch CVE-2024-40711 Browse KEV feed
Severity
CVSS 9.8 · Critical
Confidence
Confirmed
Exploit status
Exploited in the wild
EPSS
90.4%
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2024-40711 is an unauthenticated vulnerability affecting Veeam Backup and Recovery. A deserialization of untrusted data vulnerability with a malicious payload can allow an unauthenticated remote code execution...

Is it exploited?

Yes. Previdian tracks this CVE as a known exploited vulnerability. Confidence is confirmed. Listed in CISA KEV.

Who is affected?

Veeam / Backup and Recovery 0 to <= 12.2.0.334.

What should we do?

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

Overview

Backup and Recovery Deserialization

A deserialization of untrusted data vulnerability with a malicious payload can allow an unauthenticated remote code execution (RCE).

veeam Affected
backup_\&_replication
Through 12.2.0.334
Veeam Affected
Backup and Recovery
Through 12.1.2
Published
07 Sep 2024
Exploitation Reported
17 Oct 2024
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
None

Tags

nuclei_scanner nessus_scanner malware ransomware cisa

CVE References

  • CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2024-40711
  • veeam.com/kb4649 veeam.com · CVE Record https://www.veeam.com/kb4649

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 17 Oct 2024

A trusted third party reported exploitation.

Used in malware

CISA

Recorded 17 Oct 2024

Malware families have been linked to exploitation of this CVE.

Proof of concept available

GitHub

Recorded 16 Oct 2024

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
CISA First 2024-10-17 00:00 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
Nuclei https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2024/CVE-2024-40711.yaml 01 Jun 2026
Nessus https://www.tenable.com/plugins/nessus/206718 02 Jun 2025

Risk and context

Severity, weaknesses, and research context

CVSS v3.0

9.8 Critical

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

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

90.4%

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

Weaknesses

Deserialization of Untrusted Data CWE-502

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.

Potential Proof of Concepts

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

Veeam Backup & Replication - Unauthenticated

nuclei · Created Unknown

Timeline

From disclosure to observed exploitation

  1. 14:21 UTC

    Public PoC available

    Public proof-of-concept code published

  2. 15:34 UTC

    Nuclei template available

    Scanner coverage available

  3. 09:26 UTC

    Nessus plugin available

    Scanner coverage available

  4. 00:00 UTC

    Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  5. 00:00 UTC

    First public exploitation report

    Exploit observed in malware

  6. 16:11 UTC

    CVE published

    Vulnerability disclosed publicly

  7. 01:04 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-2024-40711

Sample API response 
{
  "cve_id": "CVE-2024-40711",
  "confidence": "Confirmed",
  "cvss_score": 9.8,
  "cvss_estimated": false,
  "epss_score": 0.90369,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}