How severe is CVE-2022-26500?

CVE-2022-26500 has a CVSS score of 8.8/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2022-26500?

Affected package information for CVE-2022-26500 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2022-26500?

No fixed version has been published for CVE-2022-26500 yet. Monitor the advisory for updates, apply mitigations recommended by the vendor, and use O3 Security to track when a fix becomes available in your stack.

Is CVE-2022-26500 actively exploited in the wild?

Yes. There are 1 known exploit references for CVE-2022-26500, including 1 in-the-wild exploitation observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2022-26500?

CVE-2022-26500 has an EPSS (Exploit Prediction Scoring System) score of 19.0%, placing it in the 95th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score warrants monitoring and prompt remediation.

Is CVE-2022-26500 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2022-26500 (Veeam Backup & Replication Remote Code Execution Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2022-12-13. CISA required all US federal civilian agencies to remediate this vulnerability by 2023-01-03. The required action was: Apply updates per vendor instructions. This CVE has been used in known ransomware campaigns. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

What type of vulnerability is CVE-2022-26500?

CVE-2022-26500 is classified as Path Traversal (CWE-22). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

Which products and versions are affected by CVE-2022-26500?

CVE-2022-26500 affects veeam veeam backup \& replication (4 versions, e.g. 9.5.0.1536, 9.5.4.2615, 10.0.1.4854…). Check the affected-products list on this page against your deployed version to confirm exposure.

When was CVE-2022-26500 published, and has it been updated?

CVE-2022-26500 was published on March 17, 2022 and was last updated on November 3, 2025. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV·Added 2022-12-13 — agencies required to remediate by 2023-01-03 · Ransomware

CVE-2022-26500

HIGH

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…

Published

Mar 17, 2022

Updated

Nov 3, 2025

Affected

0 pkgs

Patched

None yet

Exploits

1 known

EPSS Exploitation Probability

via FIRST.org ↗

19.0%probability of exploitation in next 30 days

Moderate Risk95th percentile0.00%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Description

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.

Affected Products

1 product · 10 configurations

Application

veeam backup \& replicationveeam

≥ 11.0.0.825 && < 11.0.1.1261

4 versions

9.5.0.15369.5.4.261510.0.1.485411.0.1.1261

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Improper limitation of path names in Veeam Backup & Replication 9.5U3, 9…

cisa.govCISADec 2022

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2022-26500 in your stack?

O3 detects CVE-2022-26500 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

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