What is CVE-2026-21672?

CVE-2026-21672 is a high-severity vulnerability in Veeam Backup And Replication, classified under Insertion of Sensitive Information into Externally-Accessible File or Directory. CVSS score: 8.8/10. Published 2026-03-12.

How severe is CVE-2026-21672?

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

Information disclosure in Veeam Backup And Replication

CVE-2026-21672

A vulnerability allowing local privilege escalation on Windows-based Veeam Backup & Replication servers.

EPSS: 0.000 (2.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

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

Affected products

Veeam Backup And Replication — versions 12, 13

Weakness classification (CWE)

CWE-538 — Insertion of Sensitive Information into Externally-Accessible File or Directory

References

support@hackerone.com
support@hackerone.com

Frequently asked questions

What is CVE-2026-21672?: CVE-2026-21672 is a high-severity vulnerability in Veeam Backup And Replication, classified under Insertion of Sensitive Information into Externally-Accessible File or Directory. CVSS score: 8.8/10. Published 2026-03-12.
How severe is CVE-2026-21672?: High severity. CVSS v3 base score is 8.8 out of 10.