AdPlug through 2.4 Out-of-Bounds Read via CxsmPlayer::play_note in XSM Files

{
  "id": "57e73307264f6bc803cd122f1ca7c372b679417dd9346064080a14a6de62ee06",
  "url": "https://osv.dev/vulnerability/CVE-2026-110876",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "AdPlug through 2.4 Out-of-Bounds Read via CxsmPlayer::play_note in XSM Files",
    "summary": "AdPlug through 2.4 contains an out-of-bounds read vulnerability in src/xsm.cpp that allows attackers to read before note_table by supplying a negative note index. Attackers can craft an XSM file with the ofTAZ! signature and a song byte of 0x80 or higher, causing a global-buffer-overflow read during playback that may crash affected applications.",
    "evidence": "osv:CVE-2026-110876",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-110876",
      "aliases": [
        "CVE-2026-110876"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/adplug/adplug",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "e491e382479ed2246f124c96c70d94561dce59b9"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "2.4"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "2.4"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "adplug-2.4",
            "adplug-2.3.3",
            "adplug-2.3.2",
            "adplug-2.3.1",
            "adplug-2.3",
            "adplug-2.2.1",
            "adplug-2.2",
            "adplug-2.1",
            "adplug-2.0",
            "dos-1.5",
            "adplug-1.5",
            "adplug-1.4",
            "adplug-1.3",
            "winamp-1.2",
            "adplug-1.2",
            "linux-1.0",
            "adplug-1.1",
            "adplug-1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-110876.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:26.560815061Z",
      "provider": "osv",
      "references": [
        "https://github.com",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110876.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-110876",
        "https://www.vulncheck.com/advisories/adplug-through-2.4-out-of-bounds-read-via-cxsmplayer-play-note-in-xsm-files",
        "https://github.com/adplug/adplug",
        "https://github.com/adplug/adplug/blob/e491e382479ed2246f124c96c70d94561dce59b9/src/xsm.cpp#L86-L134",
        "https://hackmd.io/@haind-pwn/adplug-ksm-note-loop-databuf-oob-write"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-125"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110876.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-110876",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 493423,
  "published_at": "2026-10-15T18:57:18.619+00:00"
}