{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-81881", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-27T17:48:42.122Z", "datePublished": "2026-09-22T15:05:21.940Z", "dateUpdated": "2026-09-22T15:05:21.940Z"}, "containers": {"cna": {"title": "radare2: Heap out-of-bounds read in radare2 Mach-O Swift metadata parser", "problemTypes": [{"descriptions": [{"cweId": "CWE-125", "lang": "en", "description": "CWE-125: Out-of-bounds Read", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-191", "lang": "en", "description": "CWE-191: Integer Underflow (Wrap or Wraparound)", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 3.3, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L", "version": "3.1"}}], "references": [{"name": "https://github.com/radareorg/radare2/security/advisories/GHSA-q4w7-225g-64j9", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/radareorg/radare2/security/advisories/GHSA-q4w7-225g-64j9"}, {"name": "https://github.com/radareorg/radare2/issues/26229", "tags": ["x_refsource_MISC"], "url": "https://github.com/radareorg/radare2/issues/26229"}, {"name": "https://github.com/radareorg/radare2/commit/1da6e782df220edf56138ef5fe4f33745b04db74", "tags": ["x_refsource_MISC"], "url": "https://github.com/radareorg/radare2/commit/1da6e782df220edf56138ef5fe4f33745b04db74"}, {"name": "https://github.com/radareorg/radare2/releases/tag/6.2.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/radareorg/radare2/releases/tag/6.2.0"}], "affected": [{"vendor": "radareorg", "product": "radare2", "versions": [{"version": "< 6.2.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-22T15:05:21.940Z"}, "descriptions": [{"lang": "en", "value": "radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's Mach-O Swift field-metadata parser was vulnerable because a relative Swift field pointer could be lower than the field-metadata section base, making subtraction produce a negative logical index. The vulnerability is triggered by parsing Swift type and class metadata from a crafted Mach-O file. The derived index was used to read four bytes immediately before the allocated field-metadata buffer. This can cause incorrect metadata processing or process termination; no attacker-observable memory disclosure has been demonstrated. This issue is fixed in version 6.2.0."}], "source": {"advisory": "GHSA-q4w7-225g-64j9", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "radare2", "vendor": "radareorg", "versions": [{"status": "affected", "version": "< 6.2.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's Mach-O Swift field-metadata parser was vulnerable because a relative Swift field pointer could be lower than the field-metadata section base, making subtraction produce a negative logical index. The vulnerability is triggered by parsing Swift type and class metadata from a crafted Mach-O file. The derived index was used to read four bytes immediately before the allocated field-metadata buffer. This can cause incorrect metadata processing or process termination; no attacker-observable memory disclosure has been demonstrated. This issue is fixed in version 6.2.0."}], "id": "CVE-2026-81881", "lastModified": "2026-09-22T16:18:02.910", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 3.3, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-09-22T16:18:02.910", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/radareorg/radare2/commit/1da6e782df220edf56138ef5fe4f33745b04db74"}, {"source": "security-advisories@github.com", "url": "https://github.com/radareorg/radare2/issues/26229"}, {"source": "security-advisories@github.com", "url": "https://github.com/radareorg/radare2/releases/tag/6.2.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/radareorg/radare2/security/advisories/GHSA-q4w7-225g-64j9"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}, {"lang": "en", "value": "CWE-191"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}