CVE-2026-90558
sngrep through 1.8.4 Stack Buffer Overflow via SIP Headers
CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-121 |
| Vendor | irontec |
| Product | sngrep |
| Published | Sep 12, 2026 |
| Last Updated | Sep 14, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
irontec / sngrep
0 ≤ 1.8.4
References
github.com: https://github.com/irontec/sngrep/commit/1ff74ee3ab5ff280e8ba976aa8c744dca57eb35b github.com: https://github.com/irontec/sngrep github.com: https://github.com/irontec/sngrep/blob/v1.8.4/src/sip_call.c#L260 github.com: https://github.com/irontec/sngrep/blob/v1.8.4/src/sip_msg.c#L150 vulncheck.com: https://www.vulncheck.com/advisories/sngrep-through-1.8.4-stack-buffer-overflow-via-sip-headers
Credits
Tristan Madani