Vulnerability · Published Oct 15, 2026 · Assigned by VulnCheck
CVE-2026-110876AdPlug through 2.4 Out-of-Bounds Read via CxsmPlayer::play_note in XSM Files
Medium 5.5
In plain English
A medium-severity out-of-bounds read in adplug from adplug. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities).
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.1%top 97.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | adplug | no fix listed | DEBIAN-CVE-2026-110876 |
| Debian:13 | adplug | no fix listed | DEBIAN-CVE-2026-110876 |
| Debian:14 | adplug | no fix listed | DEBIAN-CVE-2026-110876 |
| Ubuntu:22.04:LTS | adplug | no fix listed | UBUNTU-CVE-2026-110876 |
| Ubuntu:24.04:LTS | adplug | no fix listed | UBUNTU-CVE-2026-110876 |
| Ubuntu:26.04:LTS | adplug | no fix listed | UBUNTU-CVE-2026-110876 |
| Ubuntu:26.10 | adplug | no fix listed | UBUNTU-CVE-2026-110876 |
Affected products (as reported)
Weakness: CWE-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
References
- https://hackmd.io/@haind-pwn/adplug-ksm-note-loop-databuf-oob-write technical-description, exploit
- https://github.com/adplug/adplug/blob/e491e382479ed2246f124c96c70d94561dce59b9/src/xsm.cpp#L86-L134 technical-description
- https://github.com/adplug/adplug product
- VulnCheck Advisory: AdPlug through 2.4 Out-of-Bounds Read via CxsmPlayer::play_note in XSM Files third-party-advisory