Background exploitation KEV catalog Ransomware
CVE-2022-26500

Veeam Backup & Replication Remote Code Execution Vulnerability

Improper limitation of path names in Veeam Backup & Replication 9.5U3, 9.5U4,10.x, and 11.x allows remote authenticated users access to internal API functions that allows attackers to upload and execute arbitrary code.

CheckOps priority index
5.5/10 Patch within 7 days
Severity8.8
Probability0.6
Exploitation3/5

Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.

EPSS · today 5.8% higher than 93.2% of CVEs
CVSS 3.1 8.8 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:
Exploited for 1,421 days 13 Dec 2022
CISA due date 03 Jan 2023 for US federal agencies

Exploitation probability EPSS · FIRST

05010026 Sep05 Oct15 Oct24 Oct02 Nov
EPSS probability (%)Percentile among all CVEs

Exploitation signals 3 / 5

  • KEV catalog (CISA)13 Dec 2022
  • Exploited in EUVD (ENISA)13 Dec 2022
  • Used by ransomwareyes
  • EPSS above 10 %5.8%
  • No account, over the networkno

What to do

Fix

Apply the vendor’s fix as soon as it is available.

CISA guidance: Apply updates per vendor instructions.

Meanwhile

Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.

Manufacturers (CRA)

Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained

Affected products

Backup & Replication
Weaknesses (CWE)

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

  1. Published

  2. Exploitation reported (ENISA)

  3. Added to the KEV catalog

  4. CISA remediation due date

References

Other exploited vulnerabilities from the same vendor

  • CVE-2024-40711Veeam Backup and Replication Deserialization Vulnerability
    9.6 · Background exploitation
  • CVE-2023-27532Veeam Backup & Replication Cloud Connect Missing Authentication for Critical Function Vulnerability
    8.4 · Background exploitation
  • CVE-2022-26501Veeam Backup & Replication Remote Code Execution Vulnerability
    6.4 · Background exploitation

Are you affected?

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Sources: CISA KEV · ENISA EUVD · FIRST EPSS · OSV. Public data aggregated by CheckOps, updated automatically. Source texts remain the property of their authors. All exploited vulnerabilities