{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-66627", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2025-12-05T15:42:44.715Z", "datePublished": "2025-12-09T02:52:46.938Z", "dateUpdated": "2025-12-09T15:21:18.048Z"}, "containers": {"cna": {"title": "Wasmi's Linear Memory has a Critical Use After Free Vulnerability", "problemTypes": [{"descriptions": [{"cweId": "CWE-416", "lang": "en", "description": "CWE-416: Use After Free", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/wasmi-labs/wasmi/security/advisories/GHSA-g4v2-cjqp-rfmq", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/wasmi-labs/wasmi/security/advisories/GHSA-g4v2-cjqp-rfmq"}], "affected": [{"vendor": "wasmi-labs", "product": "wasmi", "versions": [{"version": ">= 0.41.0, < 0.41.2", "status": "affected"}, {"version": ">= 0.42.0, < 0.47.1", "status": "affected"}, {"version": ">= 0.50.0, < 0.51.3", "status": "affected"}, {"version": ">= 1.0.0, < 1.0.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2025-12-09T02:52:46.938Z"}, "descriptions": [{"lang": "en", "value": "Wasmi is a WebAssembly interpreter focused on constrained and embedded systems. In versions 0.41.0, 0.41.1, 0.42.0 through 0.47.1, 0.50.0 through 0.51.2 and 1.0.0, Wasmi's linear memory implementation leads to a Use After Free vulnerability, triggered by a WebAssembly module under certain memory growth conditions. This issue potentially leads to memory corruption, information disclosure, or code execution. This issue is fixed in versions 0.41.2, 0.47.1, 0.51.3 and 1.0.1. To workaround this issue, consider limiting the maximum linear memory sizes where feasible."}], "source": {"advisory": "GHSA-g4v2-cjqp-rfmq", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2025-12-09T15:21:08.509833Z", "id": "CVE-2025-66627", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-12-09T15:21:18.048Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-66627", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2025-12-09T15:21:08.509833Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-12-09T15:21:13.267Z"}}], "cna": {"title": "Wasmi's Linear Memory has a Critical Use After Free Vulnerability", "source": {"advisory": "GHSA-g4v2-cjqp-rfmq", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.4, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}], "affected": [{"vendor": "wasmi-labs", "product": "wasmi", "versions": [{"status": "affected", "version": ">= 0.41.0, < 0.41.2"}, {"status": "affected", "version": ">= 0.42.0, < 0.47.1"}, {"status": "affected", "version": ">= 0.50.0, < 0.51.3"}, {"status": "affected", "version": ">= 1.0.0, < 1.0.1"}]}], "references": [{"url": "https://github.com/wasmi-labs/wasmi/security/advisories/GHSA-g4v2-cjqp-rfmq", "name": "https://github.com/wasmi-labs/wasmi/security/advisories/GHSA-g4v2-cjqp-rfmq", "tags": ["x_refsource_CONFIRM"]}], "descriptions": [{"lang": "en", "value": "Wasmi is a WebAssembly interpreter focused on constrained and embedded systems. In versions 0.41.0, 0.41.1, 0.42.0 through 0.47.1, 0.50.0 through 0.51.2 and 1.0.0, Wasmi's linear memory implementation leads to a Use After Free vulnerability, triggered by a WebAssembly module under certain memory growth conditions. This issue potentially leads to memory corruption, information disclosure, or code execution. This issue is fixed in versions 0.41.2, 0.47.1, 0.51.3 and 1.0.1. To workaround this issue, consider limiting the maximum linear memory sizes where feasible."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416: Use After Free"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2025-12-09T02:52:46.938Z"}}}, "cveMetadata": {"cveId": "CVE-2025-66627", "state": "PUBLISHED", "dateUpdated": "2025-12-09T15:21:18.048Z", "dateReserved": "2025-12-05T15:42:44.715Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2025-12-09T02:52:46.938Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:wasmi-labs:wasmi:*:*:*:*:*:rust:*:*", "matchCriteriaId": "DEC38241-42E1-416E-B258-4789ABCE4FAE", "versionEndExcluding": "0.41.2", "versionStartIncluding": "0.41.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:wasmi-labs:wasmi:*:*:*:*:*:rust:*:*", "matchCriteriaId": "1FF46E2B-0D1F-4875-8829-15A4B0F18337", "versionEndExcluding": "0.47.1", "versionStartIncluding": "0.47.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:wasmi-labs:wasmi:*:*:*:*:*:rust:*:*", "matchCriteriaId": "3DD06F35-DCE6-436A-82E6-8ABFB27F882A", "versionEndExcluding": "0.51.3", "versionStartIncluding": "0.51.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:wasmi-labs:wasmi:1.0.0:*:*:*:*:rust:*:*", "matchCriteriaId": "0C5B18F1-7C31-4A15-8A6B-FA4C4F2E8E6B", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Wasmi is a WebAssembly interpreter focused on constrained and embedded systems. In versions 0.41.0, 0.41.1, 0.42.0 through 0.47.1, 0.50.0 through 0.51.2 and 1.0.0, Wasmi's linear memory implementation leads to a Use After Free vulnerability, triggered by a WebAssembly module under certain memory growth conditions. This issue potentially leads to memory corruption, information disclosure, or code execution. This issue is fixed in versions 0.41.2, 0.47.1, 0.51.3 and 1.0.1. To workaround this issue, consider limiting the maximum linear memory sizes where feasible."}], "id": "CVE-2025-66627", "lastModified": "2025-12-10T21:16:04.107", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 5.9, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-12-09T16:18:21.910", "references": [{"source": "security-advisories@github.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://github.com/wasmi-labs/wasmi/security/advisories/GHSA-g4v2-cjqp-rfmq"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"created": "2025-12-09T10:04:40.395202+00:00", "updated": "2025-12-09T10:04:40.395241+00:00", "vendors": ["wasmi-labs", "wasmi-labs$PRODUCT$wasmi"]}