Vulnerability Description
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.
CVSS Score
CRITICAL
Related Weaknesses (CWE)
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/1ff74ee3ab5ff280e8ba976aa8c744dca57eb35
- https://www.vulncheck.com/advisories/sngrep-through-1.8.4-stack-buffer-overflow-
FAQ
What is CVE-2026-90558?
CVE-2026-90558 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 ...
How severe is CVE-2026-90558?
CVE-2026-90558 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-90558?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.