Description
Music Player Daemon (MPD) before version 0.24.11 contains a stack buffer overflow vulnerability in the pcm_unpack_24be function in src/pcm/Pack.cxx that allows unauthenticated attackers to corrupt stack memory by triggering an off-by-one write in the PCM decoder plugin. Attackers can issue two MPD commands referencing a malicious HTTP audio source to cause the unpack loop to write 1366 entries into a 1365-entry buffer, overwriting four bytes past the array boundary with three attacker-controlled bytes from an HTTP response body, resulting in daemon termination or potential code execution.
References7
- github.com/MusicPlayerDaemon/MPD/commit/59911028c020f84bc2e669d…
- github.com/MusicPlayerDaemon/MPD/issues/2485
- github.com/MusicPlayerDaemon/MPD/releases/tag/v0.24.11
- mstreet97.github.io/security-research/opensource/vulnerability-…
- raw.githubusercontent.com/MusicPlayerDaemon/MPD/v0.24.11/NEWS
- www.musicpd.org/news/2026/05/mpd-0-24-11-released/
- www.vulncheck.com/advisories/music-player-daemon-stack-buffer-o…
Metrics
- CVSS 3.1
-
8.6
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H - CVSS 4.0
-
8.8
HIGH
Score source: CNA
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 1% percentile: 44 · as of 15 November 2026
- CWE
- CWE-193
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.