What is CVE-2025-21120?

CVE-2025-21120 is a high-severity vulnerability in Dell Avamar Server, classified under Trusting HTTP Permission Methods on the Server Side. CVSS score: 8.3/10. Published 2025-08-04.

How severe is CVE-2025-21120?

High severity. CVSS v3 base score is 8.3 out of 10.

Is CVE-2025-21120 known to be exploited?

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

Vulnerability in Dell Avamar Server

CVE-2025-21120

Dell Avamar, versions prior to 19.10 SP1 with patch 338904, contains a Trusting HTTP Permission Methods on the Server-Side vulnerability in Security. A low privileged attacker with remote access could potentially exploit this vulnerability…

EPSS: 0.003 (49.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L.

Affected products

Dell Avamar Server — versions 19.8 through 19.10
Dell Avamar Virtual Edition — versions 19.8 through 19.10

Weakness classification (CWE)

CWE-650 — Trusting HTTP Permission Methods on the Server Side

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

www.dell.com/support/kbdoc/en-us/000347698/dsa-2025-271-security-update-for-del… (vendor-advisory)

Frequently asked questions

What is CVE-2025-21120?: CVE-2025-21120 is a high-severity vulnerability in Dell Avamar Server, classified under Trusting HTTP Permission Methods on the Server Side. CVSS score: 8.3/10. Published 2025-08-04.
How severe is CVE-2025-21120?: High severity. CVSS v3 base score is 8.3 out of 10.
Is CVE-2025-21120 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.