{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-121505", "assignerOrgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a", "state": "PUBLISHED", "assignerShortName": "GitLab", "dateReserved": "2026-11-03T14:16:59.661Z", "datePublished": "2026-11-03T14:17:09.654Z", "dateUpdated": "2026-11-03T14:17:09.654Z"}, "containers": {"cna": {"title": "Out-of-bounds Read in NTPsec", "descriptions": [{"lang": "en", "value": "An out-of-bounds read in the NTS-KE client response parser (nts_client_process_response_core) in NTPsec before 1.2.4 allows a malicious NTS-KE server to read the client's stack memory, including pointers that defeat ASLR, which the client then sends in cleartext as NTS cookies, via an NTS-KE record whose declared length exceeds the data received."}], "affected": [{"vendor": "NTPsec", "product": "NTPsec", "repo": "https://gitlab.com/NTPsec/ntpsec", "versions": [{"version": "1.1.4", "status": "affected", "lessThan": "1.2.4", "versionType": "semver"}], "defaultStatus": "unaffected"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-125: Out-of-bounds Read", "cweId": "CWE-125", "type": "CWE"}]}], "references": [{"url": "https://gitlab.com/NTPsec/ntpsec/-/commit/caf0eb5df3c6ddbfc2941389bff0f9146835c021"}, {"url": "https://gitlab.com/NTPsec/ntpsec/-/work_items/836"}, {"url": "https://gitlab.com/NTPsec/ntpsec/-/work_items/902"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE", "baseScore": 3.7, "baseSeverity": "LOW"}}], "solutions": [{"lang": "en", "value": "Upgrade to version 1.2.4 or above."}], "credits": [{"lang": "en", "value": "Artem Nasonov (Astra Linux) found and fixed the issue; Erica Windisch (Cyberdione Labs) analyzed its impact", "type": "finder"}], "providerMetadata": {"orgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a", "shortName": "GitLab", "dateUpdated": "2026-11-03T14:17:09.654Z"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "NTPsec", "repo": "https://gitlab.com/NTPsec/ntpsec", "vendor": "NTPsec", "versions": [{"lessThan": "1.2.4", "status": "affected", "version": "1.1.4", "versionType": "semver"}]}], "source": "cve@gitlab.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An out-of-bounds read in the NTS-KE client response parser (nts_client_process_response_core) in NTPsec before 1.2.4 allows a malicious NTS-KE server to read the client's stack memory, including pointers that defeat ASLR, which the client then sends in cleartext as NTS cookies, via an NTS-KE record whose declared length exceeds the data received."}], "id": "CVE-2026-121505", "lastModified": "2026-11-03T16:15:28.703", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 3.7, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 1.4, "source": "cve@gitlab.com", "type": "Secondary"}]}, "published": "2026-11-03T15:17:37.557", "references": [{"source": "cve@gitlab.com", "url": "https://gitlab.com/NTPsec/ntpsec/-/commit/caf0eb5df3c6ddbfc2941389bff0f9146835c021"}, {"source": "cve@gitlab.com", "url": "https://gitlab.com/NTPsec/ntpsec/-/work_items/836"}, {"source": "cve@gitlab.com", "url": "https://gitlab.com/NTPsec/ntpsec/-/work_items/902"}], "sourceIdentifier": "cve@gitlab.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "cve@gitlab.com", "type": "Primary"}]}

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