CVE-2026-57162

The record

PJSIP is a free and open source multimedia communication library written in C. Prior to commit a1b707c, a stack buffer overflow exists in the SRTP/SDES media transport when processing a=crypto attributes during SDP offer/answer (sdes_encode_sdp() in transport_srtp_sdes.c). This affects applications with SRTP enabled (use_srtp optional or mandatory, using SDES keying). During media negotiation, the crypto attributes from the remote SDP are collected into a fixed-size array without bounding their number; a remote peer that includes an excessive number of a=crypto attributes in a single media description can write past the end of that array on the stack. This is reachable from an incoming SIP INVITE during offer/answer, before application-level authentication. Impact may range from unexpected application termination to control flow hijack/memory corruption. Applications that do not enable SRTP are not affected. This issue has been patched via commit a1b707c.

Affected packages

Related vulnerabilities

• CVE-2026-107705 Poppler 0.42.0 through 26.10.0 contains a stack-based buffer overflow in… CWE-121
• CVE-2026-95818 A stack-based buffer overflow in the dynamic loader (ld.so) of the GNU C Library (glibc)… CWE-121
• CVE-2026-61548 Rsyslog is a rocket-fast system for log processing. CWE-121
• CVE-2026-19774 BlueZ A2DP Stack-based Buffer Overflow Remote Code Execution Vulnerability. CWE-121
• CVE-2026-19542 Calling tdelete on a sufficiently deep tree in the GNU C Library version 2.1 to 2.44 may… CWE-121
• CVE-2026-15419 In the silabser.sys driver for CP210x devices v11.5.0 and earlier, a local unprivileged… CWE-121
• CVE-2026-88047 Tesseract is an open source OCR engine. CWE-121
• CVE-2026-88289 GeoVision GV-LPC2211 V1.14 (260903) fails to validate attacker-controlled variable-length… CWE-121