CVE-2026-90558

CVSS 9.8 (critical) · published 2026-09-12

sngrep through 1.8.4 contains stack buffer overflow vulnerabilities in SIP attribute formatting routines when header values exceed the 255-byte buffer limit. Attackers can craft malicious SIP packets with oversized Call-ID, X-Call-ID, or other header fields to overflow stack buffers and cause crashes or execute arbitrary code during packet parsing and rendering.

Weakness: CWE-121

Source: NVD CVE-2026-90558

References

• https://github.com/irontec/sngrep
• https://github.com/irontec/sngrep/blob/v1.8.4/src/sip_call.c#L260
• https://github.com/irontec/sngrep/blob/v1.8.4/src/sip_msg.c#L150
• https://github.com/irontec/sngrep/commit/1ff74ee3ab5ff280e8ba976aa8c744dca57eb35b
• https://www.vulncheck.com/advisories/sngrep-through-1.8.4-stack-buffer-overflow-via-sip-headers

Check your software

Connect an AI agent to the FixLane MCP server or ask the Telegram bot to check what you have installed against incidents with a verified fixed version.