Stack-based buffer overflow in shairport-sync - #VU147255
Published: September 7, 2026
Vulnerability identifier: #VU147255
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-121
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to a stack-based buffer overflow in the RTSP conversation thread in rtsp.c when hex-dumping the body of an RTSP request with an unrecognised method. A remote attacker can send an RTSP request with an unrecognised method and a large body to cause a denial of service.
On AirPlay 2 receivers, the issue is reachable before RTSP authentication.
Affected software
shairport-sync
Remediation
Install security update from vendor's website.
shairport-sync - update to 5.5