{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-121943","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-11-04T12:05:50.957Z","datePublished":"2026-11-04T12:31:21.162Z","dateUpdated":"2026-11-04T18:51:59.965Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-11-04T12:31:21.162Z"},"datePublic":"2026-10-21T13:36:25.000Z","title":"Irontec sngrep through 1.9.0 Out-of-Bounds Stack Read via sip_check_packet","descriptions":[{"lang":"en","value":"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."}],"problemTypes":[{"descriptions":[{"lang":"en","description":"Improper Null Termination","cweId":"CWE-170","type":"CWE"}]}],"affected":[{"vendor":"irontec","product":"sngrep","defaultStatus":"unaffected","versions":[{"version":"0","lessThanOrEqual":"1.9.0","status":"affected","versionType":"semver"}],"packageURL":"pkg:github/irontec/sngrep","repo":"https://github.com/irontec/sngrep"}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:irontec:sngrep:*:*:*:*:*:*:*:*","versionEndIncluding":"1.9.0"}]}]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"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","attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":6.3,"baseSeverity":"MEDIUM"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"LOW","baseScore":4.8,"baseSeverity":"MEDIUM"}}],"references":[{"url":"https://github.com/irontec/sngrep/issues/589","tags":["issue-tracking"]},{"url":"https://hackmd.io/@haindpwn/sngrep-sip-payload-missing-nul-oob-read","tags":["third-party-advisory"]},{"url":"https://github.com/irontec/sngrep/blob/v1.9.0/src/sip.c#L396-L410","tags":["technical-description"]},{"name":"VulnCheck Advisory: Irontec sngrep through 1.9.0 Out-of-Bounds Stack Read via sip_check_packet","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/irontec-sngrep-through-1.9.0-out-of-bounds-stack-read-via-sip-check-packet"}],"credits":[{"lang":"en","value":"HaiND from the Post and Telecommunication Institute of Technology","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"references":[{"url":"https://hackmd.io/@haindpwn/cve-2026-121943-121944-sngrep-sip-payload-missing-nul-oob-read","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-11-04T18:51:33.759102Z","id":"CVE-2026-121943","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-11-04T18:51:59.965Z"}}]}}