CVE-2026-121943

MediumCVSS 4.8/10Last modified Nov 4, 2026

Description

Irontec sngrep through 1.9.0 contains an out-of-bounds stack read vulnerability in sip_check_packet and sip_validate_packet caused by an off-by-one length check on 10240-byte SIP payloads. Remote attackers can send a crafted UDP or TCP SIP packet or supply a pcap file to crash sngrep or leak adjacent stack bytes into displayed SIP fields.

Metrics

CVSS 3.1 4.8/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L

Weakness enumeration

CWE-170

Affected software

No affected versions have been published.

Timeline

Published: Nov 4, 2026
Last modified: Nov 4, 2026
NVD status: Deferred

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