# CVE-2026-49127

## Summary

- **CVE ID:** CVE-2026-49127
- **Severity:** HIGH
- **CVSS Score:** 8.8 (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)
- **CWE:** CWE-193
- **Published:** May 28, 2026
- **Last Modified:** Jul 28, 2026

## 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.

## Affected Products

- MusicPlayerDaemon — MPD (0)

## References

- [CNA](https://www.musicpd.org/news/2026/05/mpd-0-24-11-released/)
- [CNA](https://raw.githubusercontent.com/MusicPlayerDaemon/MPD/v0.24.11/NEWS)
- [CNA](https://github.com/MusicPlayerDaemon/MPD/releases/tag/v0.24.11)
- [CNA](https://github.com/MusicPlayerDaemon/MPD/issues/2485)
- [CNA](https://github.com/MusicPlayerDaemon/MPD/commit/59911028c020f84bc2e669da6a1ef88121301274)
- [CNA](https://www.vulncheck.com/advisories/music-player-daemon-stack-buffer-overflow-via-pcm-unpack-24be)
- [CNA](https://mstreet97.github.io/security-research/opensource/vulnerability-disclosure/cybersecurity/cve/2026/05/25/Four_Bugs_Reachable_nc.html)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.51%
- **EPSS Percentile:** 41.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._