Heap-based buffer overflow in pjsip - #VU125903
Published: April 14, 2026
Vulnerability identifier: #VU125903
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: N/A
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: pjsip
Affected software:
pjsip
pjsip
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service or corrupt memory.
The vulnerability exists due to heap-based buffer overflow in the Opus codec decode path when decoding specially crafted incoming Opus audio frames. A remote attacker can send a specially crafted incoming audio packet to cause a denial of service or corrupt memory.
This affects applications that use the Opus audio codec in the receiving direction.
Remediation
Install security update from vendor's website.