How severe is CVE-2022-26501?

CVE-2022-26501 has a CVSS score of 9.8/10, rated CRITICAL. Immediate patching is strongly recommended.

Which packages are affected by CVE-2022-26501?

Affected package information for CVE-2022-26501 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2022-26501?

No fixed version has been published for CVE-2022-26501 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-2022-26501 actively exploited in the wild?

Yes. There are 1 known exploit references for CVE-2022-26501, 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-2022-26501?

CVE-2022-26501 has an EPSS (Exploit Prediction Scoring System) score of 75.4%, placing it in the 99th 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. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

Is CVE-2022-26501 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2022-26501 (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-2022-26501?

CVE-2022-26501 is classified as Missing Authentication (CWE-306). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

Which products and versions are affected by CVE-2022-26501?

CVE-2022-26501 affects veeam veeam backup \& replication (2 versions, e.g. 10.0.1.4854, 11.0.1.1261). Check the affected-products list on this page against your deployed version to confirm exposure.

When was CVE-2022-26501 published, and has it been updated?

CVE-2022-26501 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-2022-26501

CRITICAL

Veeam Backup & Replication 10.x and 11.x has Incorrect Access Control (issue 1 of 2).

Published

Mar 17, 2022

Updated

Nov 3, 2025

Affected

0 pkgs

Patched

None yet

Exploits

1 known

EPSS Exploitation Probability

via FIRST.org ↗

75.4%probability of exploitation in next 30 days

Very High Risk99th 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

Veeam Backup & Replication 10.x and 11.x has Incorrect Access Control (issue 1 of 2).

Affected Products

1 product · 8 configurations

Application

veeam backup \& replicationveeam

≥ 11.0.0.825 && < 11.0.1.1261

2 versions

10.0.1.485411.0.1.1261

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.

Veeam Backup & Replication 10.x and 11.x has Incorrect Access Control (i…

cisa.govCISADec 2022

Frequently Asked Questions

Veeam Backup & Replication 10.x and 11.x has Incorrect Access Control (issue 1 of 2).

O3 Security · Impact-Aware SCA

Is CVE-2022-26501 in your stack?

O3 detects CVE-2022-26501 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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