What’s Vulnerable › Vulnerabilities

CVE-2026-110876: AdPlug through 2.4 Out-of-Bounds Read via CxsmPlayer::play_note in XSM Files

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-15 · updated 2026-10-21
• Weakness: CWE-125

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 products

• adplug: through 2.4

References

• 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
• https://www.vulncheck.com/advisories/adplug-through-2.4-out-of-bounds-read-via-cxsmplayer-play-note-in-xsm-files

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