What is CVE-2025-55129?

CVE-2025-55129 is a medium-severity vulnerability in Aquaplatform Revive Adserver, classified under CWE-176. CVSS score: 5.4/10. Published 2025-12-02.

How severe is CVE-2025-55129?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Vulnerability in Aquaplatform Revive Adserver

CVE-2025-55129

HackerOne community member Kassem S.(kassem_s94) has reported that username handling in Revive Adserver was still vulnerable to impersonation attacks after the fix for CVE-2025-52672, via several alternate techniques. Homoglyphs based impersonation has been independently reported by other HackerOne users, such as itz_hari_ and khoof.

Published 2025-12-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.002 (14.6th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 14.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Aquaplatform Revive Adserver
Revive Adserver — versions 6.0.4, 6

Weakness classification (CWE)

CWE-176

References

hackerone.com/reports/3434156 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2025-55129?: CVE-2025-55129 is a medium-severity vulnerability in Aquaplatform Revive Adserver, classified under CWE-176. CVSS score: 5.4/10. Published 2025-12-02.
How severe is CVE-2025-55129?: Medium severity. CVSS v3 base score is 5.4 out of 10.