{"id":"CVE-2026-121943","published":"2026-11-04T13:17:28.923","lastModified":"2026-11-04T19:17:34.610","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.","cvssScore":4.8,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L","cwes":["CWE-170"],"vendors":[],"products":[],"references":[{"url":"https://github.com/irontec/sngrep/blob/v1.9.0/src/sip.c#L396-L410","tags":[]},{"url":"https://github.com/irontec/sngrep/issues/589","tags":[]},{"url":"https://hackmd.io/@haindpwn/sngrep-sip-payload-missing-nul-oob-read","tags":[]},{"url":"https://www.vulncheck.com/advisories/irontec-sngrep-through-1.9.0-out-of-bounds-stack-read-via-sip-check-packet","tags":[]},{"url":"https://hackmd.io/@haindpwn/cve-2026-121943-121944-sngrep-sip-payload-missing-nul-oob-read","tags":[]}],"exploitRefs":[{"url":"https://github.com/irontec/sngrep/blob/v1.9.0/src/sip.c#L396-L410","tags":[]},{"url":"https://github.com/irontec/sngrep/issues/589","tags":[]}],"hasPoc":true,"ai":null}