CVE-2026-90558: Irontec Sngrep

Critical severity, CVSS 9.8. EPSS: 0.9% chance of exploitation in the next 30 days.

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.

Affected products

• Irontec Sngrep: up to and including 1.8.4

Published 2026-09-12. Last modified 2026-09-23.