CVE-2026-90558

sngrep through 1.8.4 Stack Buffer Overflow via SIP Headers

Published Sep 12, 2026 CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Weaknesses CWE-120
References
Metrics threat_severity

None

threat_severity

Critical

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title sngrep through 1.8.4 Stack Buffer Overflow via SIP Headers
First Time appeared Irontec
Irontec sngrep
Weaknesses CWE-121
CPEs cpe:2.3:a:irontec:sngrep:*:*:*:*:*:*:*:*
Vendors & Products Irontec
Irontec sngrep
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Sep 14, 2026, 6:24 PM
Reserved
Sep 12, 2026, 11:13 AM
Status
Deferred
Published
Sep 12, 2026, 6:16 PM
Modified
Sep 23, 2026, 5:17 PM
Severity
Critical
Public date
Sep 12, 2026, 6:06 PM