Buffer overflow in Mupen64Plus - CVE-2025-29366
Published: October 29, 2025
Vulnerability identifier: #VU117792
CSH Severity: High
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-29366
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a malicious guest to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the write_rdram_regs() and write_rdram_regs() functions. A malicious guest can trigger memory corruption and execute arbitrary code on the host machine.
Affected software
Mupen64Plus
Fedora
mupen64plus
Fedora
mupen64plus
How to mitigate CVE-2025-29366
Install updates from vendor's website.
mupen64plus - addressed in versions 2.6.0-8.fc41, 2.6.0-8.fc42, 2.6.0-8.fc43
External References
- https://gist.github.com/Giles-one/f4ea405c2a26000bb4ff4cfb9622be49
- https://github.com/Giles-one/mupen64plusEscape/tree/main/BUG1
- https://github.com/mupen64plus/mupen64plus-core/blob/2.6.0/src/device/rdram/rdram.c#L159
- https://github.com/mupen64plus/mupen64plus-core/blob/master/src/device/rdram/rdram.h#L50
- https://github.com/mupen64plus/mupen64plus-core/blob/master/src/device/rdram/rdram.h#L60