CVE-2026-90558
CriticalCVSS 9.8Summary
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.
Risk Assessment
The vulnerability can lead to remote code execution or application crashes in sngrep when processing malicious SIP traffic, posing a serious threat to analyst workstations and VoIP monitoring systems.
Recommendation
Update sngrep to a version newer than 1.8.4 if available, or limit exposure to untrusted SIP traffic until a patch is released.
Other vulnerabilities in sngrep
Original NVD description (English source)
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.