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Vulnerability · Published Aug 30, 2025 · Assigned by VulDB

CVE-2025-9688Mupen64Plus is_viewer.c write_is_viewer integer overflow

Medium 5.0

In plain English

A medium-severity integer overflow in Mupen64Plus. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities).

Severity (CVSS 3.1)5.0Medium
Exploit odds (30 days)0.3%top 78.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12mupen64plus-coreno fix listedDEBIAN-CVE-2025-9688
Debian:13mupen64plus-coreno fix listedDEBIAN-CVE-2025-9688
Debian:14mupen64plus-coreno fix listedDEBIAN-CVE-2025-9688
Ubuntu:22.04:LTSmupen64plus-coreno fix listedUBUNTU-CVE-2025-9688
Ubuntu:24.04:LTSmupen64plus-coreno fix listedUBUNTU-CVE-2025-9688
Ubuntu:25.10mupen64plus-coreno fix listedUBUNTU-CVE-2025-9688
Ubuntu:26.04:LTSmupen64plus-coreno fix listedUBUNTU-CVE-2025-9688
Ubuntu:26.10mupen64plus-coreno fix listedUBUNTU-CVE-2025-9688

Affected products (as reported)

VendorProductVersions
n/a Mupen64Plus 2.02.12.22.32.42.52.6.0

Weakness: CWE-190, CWE-189 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C

References