CVE-2026-121943mediumCWE-170

CVE-2026-121943: medium-severity vulnerability in irontec sngrep

Irontec sngrep through 1.9.0 Out-of-Bounds Stack Read via sip_check_packet

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33Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 6.3epss 5.6%
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.
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
Affected products
irontec · sngrep
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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