CVE-2025-7881 Mercusys MW301R Web Interface password recovery
Remote attackers can bypass authentication via weak password recovery mechanisms in the Mercusys MW301R web interface, leading to account takeover.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-7881?
CVE-2025-7881 is a medium-severity authentication bypass vulnerability in Mercusys MW301R, published on 20 Jul 2025. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
A vulnerability was found in Mercusys MW301R 1.0.2 Build 190726 Rel.59423n. It has been declared as problematic. This vulnerability affects unknown code of the component Web Interface. The manipulation of the argument code leads to weak password recovery. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Weakness: CWE-640
Which versions are affected by CVE-2025-7881?
How do I fix CVE-2025-7881?
No fix has been published for CVE-2025-7881 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-2025-7881 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-7881 exists.
Sources
Also known as GHSA-xrf9-vprm-8m66.