CVE-2026-90558

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 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 v3.1 Score

9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Published: 9/12/2026Modified: 9/23/2026

Related Intelligence (0)

No articles currently reference this CVE.

References (5)

https://github.com/irontec/sngrephttps://github.com/irontec/sngrep/blob/v1.8.4/src/sip_call.c#L260https://github.com/irontec/sngrep/blob/v1.8.4/src/sip_msg.c#L150https://github.com/irontec/sngrep/commit/1ff74ee3ab5ff280e8ba976aa8c744dca57eb35bhttps://www.vulncheck.com/advisories/sngrep-through-1.8.4-stack-buffer-overflow-via-sip-headers