CVE-2025-9688 Mupen64Plus is_viewer.c write_is_viewer integer overflow
An integer overflow in Mupen64Plus allows remote attackers to potentially execute code or cause denial of service via complex attacks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2025-9688?
CVE-2025-9688 is a low-severity vulnerability in Mupen64Plus, published on 30 Aug 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A security vulnerability has been detected in Mupen64Plus up to 2.6.0. The affected element is the function write_is_viewer of the file src/device/cart/is_viewer.c. The manipulation leads to integer overflow. It is possible to initiate the attack remotely. The attack is considered to have high complexity. The exploitability is described as difficult. The exploit has been disclosed publicly and may be used. The identifier of the patch is 3984137fc0c44110f1ef876adb008885b05a6e18. To fix this issue, it is recommended to deploy a patch.
Which versions are affected by CVE-2025-9688?
Linux distribution packages (1)
mupen64plus openSUSE:Tumbleweed | All versions | 2.6.0-2.1 |
How do I fix CVE-2025-9688?
Apply the vendor's patch.
Is CVE-2025-9688 being exploited?
There is no known exploitation of CVE-2025-9688 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2025-9688, GHSA-449c-3xhq-m2q6, UBUNTU-CVE-2025-9688, openSUSE-SU-2025:15513-1.