CVE-2025-55129 Auth bypass in Revive Adserver

Medium 5.4 Published 2 Dec 2025 Updated 2 Dec 2025

Attackers can impersonate users in Revive Adserver via homoglyphs, potentially leading to account takeover.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-55129?

CVE-2025-55129 is a medium-severity authentication bypass vulnerability in Revive Adserver, published on 2 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

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.

Weakness: CWE-176

Which versions are affected by CVE-2025-55129?

It affects 1 product.

Products include Aquaplatform Revive Adserver.

How do I fix CVE-2025-55129?

No fix has been published for CVE-2025-55129 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2025-55129 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-55129 exists.

Sources

Also known as GHSA-jhq7-888q-jw4m.