{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-66220", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2025-11-24T23:01:29.679Z", "datePublished": "2025-12-03T18:31:50.389Z", "dateUpdated": "2025-12-03T19:10:53.694Z"}, "containers": {"cna": {"title": "Envoy\u2019s TLS certificate matcher for `match_typed_subject_alt_names` may incorrectly treat certificates containing an embedded null byte", "problemTypes": [{"descriptions": [{"cweId": "CWE-170", "lang": "en", "description": "CWE-170: Improper Null Termination", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-rwjg-c3h2-f57p", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-rwjg-c3h2-f57p"}], "affected": [{"vendor": "envoyproxy", "product": "envoy", "versions": [{"version": ">= 1.36.0, <= 1.36.2", "status": "affected"}, {"version": ">= 1.35.0, <= 1.35.6", "status": "affected"}, {"version": ">= 1.34.0, <= 1.34.10", "status": "affected"}, {"version": "<= 1.33.12", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2025-12-03T18:31:50.389Z"}, "descriptions": [{"lang": "en", "value": "Envoy is a high-performance edge/middle/service proxy. In 1.33.12, 1.34.10, 1.35.6, 1.36.2, and earlier, Envoy\u2019s mTLS certificate matcher for match_typed_subject_alt_names may incorrectly treat certificates containing an embedded null byte (\\0) inside an OTHERNAME SAN value as valid matches."}], "source": {"advisory": "GHSA-rwjg-c3h2-f57p", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2025-12-03T19:10:43.590627Z", "id": "CVE-2025-66220", "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": "2025-12-03T19:10:53.694Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-66220", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-12-03T19:10:43.590627Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-12-03T19:10:49.222Z"}}], "cna": {"title": "Envoy\u2019s TLS certificate matcher for `match_typed_subject_alt_names` may incorrectly treat certificates containing an embedded null byte", "source": {"advisory": "GHSA-rwjg-c3h2-f57p", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}}], "affected": [{"vendor": "envoyproxy", "product": "envoy", "versions": [{"status": "affected", "version": ">= 1.36.0, <= 1.36.2"}, {"status": "affected", "version": ">= 1.35.0, <= 1.35.6"}, {"status": "affected", "version": ">= 1.34.0, <= 1.34.10"}, {"status": "affected", "version": "<= 1.33.12"}]}], "references": [{"url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-rwjg-c3h2-f57p", "name": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-rwjg-c3h2-f57p", "tags": ["x_refsource_CONFIRM"]}], "descriptions": [{"lang": "en", "value": "Envoy is a high-performance edge/middle/service proxy. In 1.33.12, 1.34.10, 1.35.6, 1.36.2, and earlier, Envoy\u2019s mTLS certificate matcher for match_typed_subject_alt_names may incorrectly treat certificates containing an embedded null byte (\\0) inside an OTHERNAME SAN value as valid matches."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-170", "description": "CWE-170: Improper Null Termination"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2025-12-03T18:31:50.389Z"}}}, "cveMetadata": {"cveId": "CVE-2025-66220", "state": "PUBLISHED", "dateUpdated": "2025-12-03T19:10:53.694Z", "dateReserved": "2025-11-24T23:01:29.679Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2025-12-03T18:31:50.389Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*", "matchCriteriaId": "B303FFFE-9973-4E7E-8A8C-DE847B725534", "versionEndExcluding": "1.33.13", "vulnerable": true}, {"criteria": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*", "matchCriteriaId": "4419A82D-995F-4DD0-BAE1-3825791245D3", "versionEndExcluding": "1.34.11", "versionStartIncluding": "1.34.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*", "matchCriteriaId": "C50E067C-AE0D-4B14-A442-53603039EFCD", "versionEndExcluding": "1.35.7", "versionStartIncluding": "1.35.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*", "matchCriteriaId": "B39C3DF2-E73F-4B66-9504-C24E329ACB54", "versionEndExcluding": "1.36.3", "versionStartIncluding": "1.36.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Envoy is a high-performance edge/middle/service proxy. In 1.33.12, 1.34.10, 1.35.6, 1.36.2, and earlier, Envoy\u2019s mTLS certificate matcher for match_typed_subject_alt_names may incorrectly treat certificates containing an embedded null byte (\\0) inside an OTHERNAME SAN value as valid matches."}], "id": "CVE-2025-66220", "lastModified": "2025-12-05T15:44:26.663", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.0, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 0.7, "impactScore": 4.2, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 4.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-12-03T19:15:58.010", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-rwjg-c3h2-f57p"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-170"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}