What is CVE-2022-26504?

CVE-2022-26504 is a high-severity vulnerability in Veeam Backup \& Replication, classified under Improper Authentication. CVSS score: 8.8/10. Published 2022-03-17.

How severe is CVE-2022-26504?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2022-26504 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Veeam Backup \& Replication

CVE-2022-26504

Improper authentication in Veeam Backup & Replication 9.5U3, 9.5U4,10.x and 11.x component used for Microsoft System Center Virtual Machine Manager (SCVMM) allows attackers execute arbitrary code via Veeam.Backup.PSManager.exe

Vulnerability class: Broken Authentication

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

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.024 (83.6th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 83.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.026 · newest: 0.024 · change: -0.001

Affected products

Veeam Backup \& Replication — versions 9.5.0.1536, 9.5.4.2615, 10.0.1.4854

Weakness classification (CWE)

CWE-287 — Improper Authentication

Public proof-of-concept exploits

References

veeam.com (Vendor Advisory)
www.veeam.com/kb4290 (Vendor Advisory)

Frequently asked questions

What is CVE-2022-26504?: CVE-2022-26504 is a high-severity vulnerability in Veeam Backup \& Replication, classified under Improper Authentication. CVSS score: 8.8/10. Published 2022-03-17.
How severe is CVE-2022-26504?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2022-26504 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.