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 products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Mupen64Plus | 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | mupen64plus-core | No fix yet | — |
| Debian 13 | mupen64plus-core | No fix yet | — |
| Debian 12 | mupen64plus-core | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | mupen64plus-core | No fix yet | — |
| Ubuntu 26.04 LTS | mupen64plus-core | No fix yet | — |
| Ubuntu 25.10 | mupen64plus-core | No fix yet | — |
| Ubuntu 24.04 LTS | mupen64plus-core | No fix yet | — |
| Ubuntu 22.04 LTS | mupen64plus-core | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | mupen64plus-core | No fix yet | — |
| Ubuntu 18.04 LTS | mupen64plus-core | No fix yet | — |
| Ubuntu 16.04 LTS | mupen64plus-core | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | mupen64plus | 2.6.0-2.1 | openSUSE-SU-2025:15513-1 |
Advisories 1
- openSUSE-SU-2025:15513-1 libmupen64plus-devel-2.6.0-2.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
References
- VDB-321900 | Mupen64Plus is_viewer.c write_is_viewer integer overflow vdb-entry technical-description
- VDB-321900 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- Submit #638592 | mupen64plus.org mupen64plus <= 2.6.0 Integer Overflow to Buffer Overflow third-party-advisory
- https://github.com/Giles-one/mupen64plusEscape/tree/main/BUG10 exploit
- https://github.com/mupen64plus/mupen64plus-core/commit/3984137fc0c44110f1ef876adb008885b05a6e18 patch