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CVE-2026-49127

Music Player Daemon < 0.24.11 Stack Buffer Overflow via pcm_unpack_24be

8.8 HighFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
Low
Integrity
Low
Availability
High

Exploit likelihood

0.51%Up 0.4 points since May 29, 2026
90%50%10%1%

What each source reports

CVE List Score used 8.8

Music Player Daemon < 0.24.11 Stack Buffer Overflow via pcm_unpack_24be

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.

Record
CVE-2026-49127
CVSS 4.0
8.8 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
CVSS 3.1
8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Weakness
CWE-193
Updated
2026-11-02
EUVDEUVD-2026-33000 8.8

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.

Record
EUVD-2026-33000
CVSS 4.0
8.8 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-p9r5-qpp4-rjg3 8.8

Music Player Daemon (MPD) before version 0.24.11 contains a stack buffer overflow vulnerability...

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.

Record
GHSA-p9r5-qpp4-rjg3
CVSS 4.0
8.8 HighCVSS: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
CVSS 3.1
8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Weakness
CWE-193
Updated
2026-11-02
NVD 8.8

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.

Record
CVE-2026-49127
CVSS 4.0
8.8 HighCVSS: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
CVSS 3.1
8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Weakness
CWE-193
Updated
2026-11-02
OSV 8.8

Music Player Daemon < 0.24.11 Stack Buffer Overflow via pcm_unpack_24be

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.

Record
CVE-2026-49127
CVSS 4.0
8.8 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
Weakness
CWE-193
Updated
2026-11-02
OSVDEBIAN-CVE-2026-49127 8.8

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.

Record
DEBIAN-CVE-2026-49127
CVSS 4.0
8.8 HighCVSS: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
Updated
2026-11-02
OSVUBUNTU-CVE-2026-49127 8.8

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.

Record
UBUNTU-CVE-2026-49127
CVSS 4.0
8.8 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
CVSS 3.1
8.6 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
mpd
Debian:12
All versions, plus listed versions
0.23.12-10.23.14-10.23.14-20.23.15-10.23.15-1~bpo12+1
Show 12 moreShow less
0.23.16-10.23.17-10.24-10.24.1-10.24.12-10.24.16-10.24.2-10.24.2-1~bpo12+10.24.3-10.24.4-10.24.6-10.24.8-1
None known
mpd
Debian:13
All versions, plus listed versions
0.24.12-10.24.16-10.24.4-10.24.6-10.24.8-1
None known
mpd
Debian:14
before 0.24.12-1, plus listed versions
0.24.4-10.24.6-10.24.8-1
0.24.12-1
mpd
Ubuntu:16.04:LTS
All versions, plus listed versions
0.19.10-1build10.19.11-10.19.12-1
None known
mpd
Ubuntu:18.04:LTS
All versions, plus listed versions
0.20.9-20.20.9-2build20.20.11-10.20.11-1build10.20.13-10.20.17-10.20.18-10.20.18-1build1
None known
mpd
Ubuntu:20.04:LTS
All versions, plus listed versions
0.21.13-1build10.21.13-1build20.21.16-10.21.16-1build10.21.16-1build20.21.20-10.21.20-1build1
None known
mpd
Ubuntu:22.04:LTS
All versions, plus listed versions
0.22.6-1build10.23.3-20.23.5-1build10.23.5-1build20.23.5-1build30.23.5-1build40.23.5-1build50.23.5-1build7
None known
mpd
Ubuntu:24.04:LTS
All versions, plus listed versions
0.23.12-1build30.23.14-10.23.14-20.23.14-2build10.23.14-2build30.23.14-2build40.23.14-2build5
None known
mpd
Ubuntu:25.10
All versions, plus listed versions
0.23.17-1build10.24.3-10.24.4-1
None known
mpd
Ubuntu:26.10
All versions, plus listed versions
0.24.6-1build30.24.12-1
None known
mpd
Ubuntu:26.04:LTS
All versions, plus listed versions
0.24.4-10.24.6-10.24.6-1build10.24.6-1build20.24.6-1build3
None known

History

History
RecordedChangedSources
aliases, publishedEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-49127 is a high vulnerability (CVSS 8.8) in Musicplayerdaemon Mpd, published May 28, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.51%, the 43rd percentile. Fixed in mpd 0.24.12-1.

References

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