CVE-2025-9688

Name	CVE-2025-9688
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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
mupen64plus-core (PTS)	bullseye	2.5-7	vulnerable
	bookworm	2.5.9+341+gf82b37bf-1	vulnerable
	forky, sid, trixie	2.6.0-2	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
mupen64plus-core	source	(unstable)	(unfixed)	unimportant

Notes

https://github.com/Giles-one/mupen64plusEscape/tree/main/BUG10
https://github.com/mupen64plus/mupen64plus-core/commit/3984137fc0c44110f1ef876adb008885b05a6e18
Negligible security impact