{"id":"DEBIAN-CVE-2026-121943","details":"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.","modified":"2026-11-06T07:00:06.464838582Z","published":"2026-11-04T13:17:28.923Z","upstream":["CVE-2026-121943"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-121943"}],"affected":[{"package":{"name":"sngrep","ecosystem":"Debian:12","purl":"pkg:deb/debian/sngrep?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.0-1","1.7.0-1","1.7.0-2","1.7.0-2~bpo12+1","1.8.0-1","1.8.1-1","1.8.2-1","1.8.2-1~bpo12+1","1.8.3-1","1.8.3-1~bpo13+1","1.8.4-1","1.8.4-1~bpo13+1","1.8.4-2","1.9.0-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-121943.json"}},{"package":{"name":"sngrep","ecosystem":"Debian:13","purl":"pkg:deb/debian/sngrep?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8.2-1","1.8.3-1","1.8.3-1~bpo13+1","1.8.4-1","1.8.4-1~bpo13+1","1.8.4-2","1.9.0-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-121943.json"}},{"package":{"name":"sngrep","ecosystem":"Debian:14","purl":"pkg:deb/debian/sngrep?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8.2-1","1.8.3-1","1.8.3-1~bpo13+1","1.8.4-1","1.8.4-1~bpo13+1","1.8.4-2","1.9.0-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-121943.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V4","score":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}