What is CVE-2022-26501?

CVE-2022-26501 is a critical-severity vulnerability in Veeam Backup \& Replication, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2022-03-17.

How severe is CVE-2022-26501?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2022-26501 known to be exploited?

Yes. CVE-2022-26501 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-12-13), indicating it is being actively exploited. 4 public proof-of-concept repositories are indexed.

Auth bypass in Veeam Backup \& Replication

CVE-2022-26501

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

Vulnerability class: Broken Authentication

Published 2022-03-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.041 (90.6th percentile), scored 2026-10-19.

Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.041 · newest: 0.041 · change: 0.000

Affected products

Veeam Backup \& Replication — versions 10.0.1.4854, 11.0.1.1261

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2022-12-13. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2023-01-03.

Required action: Apply updates per vendor instructions.

Known ransomware campaign use: yes.

Public proof-of-concept exploits

References

veeam.com (Vendor Advisory)
www.veeam.com/kb4288 (Vendor Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2022-26501?: CVE-2022-26501 is a critical-severity vulnerability in Veeam Backup \& Replication, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2022-03-17.
How severe is CVE-2022-26501?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2022-26501 known to be exploited?: Yes. CVE-2022-26501 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-12-13), indicating it is being actively exploited. 4 public proof-of-concept repositories are indexed.