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mupen64plus-core — security advisory

Type: advisorySources: OSVAdvisory ID: UBUNTU-CVE-2025-9688

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.

Products
mupen64plus-core
Affected versions
2.5-1, 2.5-2, 2.5-3, 2.5-4, 2.5-4build1, 2.5-6, 2.5-6build1, 2.5-7, 2.5-8, 2.5.9+341+gf82b37bf-1, 2.5.9+341+gf82b37bf-1build2, 2.5.9+341+gf82b37bf-1build3, 2.6.0-2, 2.6.0-2build1, 2.6.0-3
Fixed versions
Not specified
CVEs
CVE-2025-9688
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 02:52 UTC · Revision 1

Source evidence

UBUNTU-CVE-2025-9688

core-osv · Original source

Published 30 Aug 2025, 13:15 UTC

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.

osv:UBUNTU-CVE-2025-9688

mupen64plus-core

Fixed versions: Not specified

mupen64plus-core

Fixed versions: Not specified

mupen64plus-core

Fixed versions: Not specified

mupen64plus-core

Fixed versions: Not specified

mupen64plus-core

Fixed versions: Not specified

mupen64plus-core

Fixed versions: Not specified

mupen64plus-core

Fixed versions: Not specified

mupen64plus-core

Fixed versions: Not specified

Complete source record
{
  "id": "7b23a4869e271fd60b0dc2e3ce1a3b5a145dbdbe693ea1f99037f38f5ce35e40",
  "url": "https://osv.dev/vulnerability/UBUNTU-CVE-2025-9688",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "UBUNTU-CVE-2025-9688",
    "summary": "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.",
    "evidence": "osv:UBUNTU-CVE-2025-9688",
    "products": [
      {
        "name": {
          "value": "mupen64plus-core",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "2.5-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2.5-2",
            "evidence": "/affected/0/versions"
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          {
            "value": "2.5-3",
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          {
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            "evidence": "/affected/4/versions"
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      {
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        "affected_versions": [
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            "evidence": "/affected/5/versions"
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      },
      {
        "name": {
          "value": "mupen64plus-core",
          "evidence": "/affected/6/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "2.6.0-2build1",
            "evidence": "/affected/6/versions"
          },
          {
            "value": "2.6.0-3",
            "evidence": "/affected/6/versions"
          }
        ]
      },
      {
        "name": {
          "value": "mupen64plus-core",
          "evidence": "/affected/7/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "2.6.0-2",
            "evidence": "/affected/7/versions"
          },
          {
            "value": "2.6.0-2build1",
            "evidence": "/affected/7/versions"
          }
        ]
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "UBUNTU-CVE-2025-9688",
      "aliases": [
        "UBUNTU-CVE-2025-9688"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L"
        },
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P"
        },
        {
          "type": "Ubuntu",
          "score": "medium"
        }
      ],
      "affected": [
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              "events": [
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          "package": {
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            "purl": "pkg:deb/ubuntu/mupen64plus-core?arch=source&distro=xenial",
            "ecosystem": "Ubuntu:16.04:LTS"
          },
          "versions": [
            "2.5-1",
            "2.5-2",
            "2.5-3",
            "2.5-4"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-9688.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libmupen64plus2",
                "binary_version": "2.5-4"
              },
              {
                "binary_name": "mupen64plus-data",
                "binary_version": "2.5-4"
              }
            ]
          }
        },
        {
          "ranges": [
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          ],
          "package": {
            "name": "mupen64plus-core",
            "purl": "pkg:deb/ubuntu/mupen64plus-core?arch=source&distro=bionic",
            "ecosystem": "Ubuntu:18.04:LTS"
          },
          "versions": [
            "2.5-4build1"
          ],
          "database_specific": {
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          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libmupen64plus2",
                "binary_version": "2.5-4build1"
              },
              {
                "binary_name": "mupen64plus-data",
                "binary_version": "2.5-4build1"
              }
            ]
          }
        },
        {
          "ranges": [
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                {
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              ]
            }
          ],
          "package": {
            "name": "mupen64plus-core",
            "purl": "pkg:deb/ubuntu/mupen64plus-core?arch=source&distro=focal",
            "ecosystem": "Ubuntu:20.04:LTS"
          },
          "versions": [
            "2.5-6",
            "2.5-6build1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-9688.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libmupen64plus2",
                "binary_version": "2.5-6build1"
              },
              {
                "binary_name": "mupen64plus-data",
                "binary_version": "2.5-6build1"
              }
            ]
          }
        },
        {
          "ranges": [
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              "type": "ECOSYSTEM",
              "events": [
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            }
          ],
          "package": {
            "name": "mupen64plus-core",
            "purl": "pkg:deb/ubuntu/mupen64plus-core?arch=source&distro=jammy",
            "ecosystem": "Ubuntu:22.04:LTS"
          },
          "versions": [
            "2.5-7",
            "2.5-8"
          ],
          "database_specific": {
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          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libmupen64plus2",
                "binary_version": "2.5-8"
              },
              {
                "binary_name": "mupen64plus-data",
                "binary_version": "2.5-8"
              }
            ]
          }
        },
        {
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          ],
          "package": {
            "name": "mupen64plus-core",
            "purl": "pkg:deb/ubuntu/mupen64plus-core?arch=source&distro=noble",
            "ecosystem": "Ubuntu:24.04:LTS"
          },
          "versions": [
            "2.5.9+341+gf82b37bf-1",
            "2.5.9+341+gf82b37bf-1build2",
            "2.5.9+341+gf82b37bf-1build3"
          ],
          "database_specific": {
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          },
          "versions": [
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          ],
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          },
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          },
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          },
          "versions": [
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            "2.6.0-2build1"
          ],
          "database_specific": {
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          },
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              }
            ]
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        }
      ],
      "modified": "2026-10-17T12:59:38.124030994Z",
      "provider": "osv",
      "upstream": [
        "CVE-2025-9688"
      ],
      "references": [
        "https://ubuntu.com/security/CVE-2025-9688",
        "https://www.cve.org/CVERecord?id=CVE-2025-9688",
        "https://github.com/Giles-one/mupen64plusEscape/tree/main/BUG10",
        "https://vuldb.com/?ctiid.321900",
        "https://vuldb.com/?id.321900",
        "https://vuldb.com/?submit.638592"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2025-9688",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 359696,
  "published_at": "2025-08-30T13:15:00+00:00"
}