by Kastro
Paper/Archive/CVE-2026-90558

CVE-2026-90558

irontec sngrep — sngrep through 1.8.4 Stack Buffer Overflow via SIP Headers

EPSS 0.9%CVSS 9.8
critical.is priorityof 100
41
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 59.1.591 × 2011.8No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
sngrep≤ 1.8.4–CNA

Scores by source

VulnCheck (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

patchgithub.com/irontec/sngrep/commit/1ff74ee3ab5ff280e8ba976aa8c744dca57eb35brefgithub.com/irontec/sngrepwriteupgithub.com/irontec/sngrep/blob/v1.8.4/src/sip_call.c#L260writeupgithub.com/irontec/sngrep/blob/v1.8.4/src/sip_msg.c#L150writeupvulncheck.com/advisories/sngrep-through-1.8.4-stack-buffer-overflow-via-sip-headers