What is CVE-2025-28172?

CVE-2025-28172 is a medium-severity vulnerability in Grandstream Ucm6510, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 6.5/10. Published 2025-07-29.

How severe is CVE-2025-28172?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2025-28172 known to be exploited?

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

Vulnerability in Grandstream Ucm6510

CVE-2025-28172

Grandstream Networks UCM6510 v1.0.20.52 and before is vulnerable to Improper Restriction of Excessive Authentication Attempts. An attacker can perform an arbitrary number of authentication attempts using different passwords and eventually gain access to the targeted account using a brute force attack.

EPSS: 0.003 (18.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

Affected products

Weakness classification (CWE)

CWE-307 — Improper Restriction of Excessive Authentication Attempts

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

cve@mitre.org (Product)
cve@mitre.org (Third Party Advisory)

Frequently asked questions

What is CVE-2025-28172?: CVE-2025-28172 is a medium-severity vulnerability in Grandstream Ucm6510, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 6.5/10. Published 2025-07-29.
How severe is CVE-2025-28172?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2025-28172 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.