{"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": "2026-11-04T12:31:21.162Z"}, "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"}}}}

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