{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-81879", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-27T17:48:42.122Z", "datePublished": "2026-09-22T15:09:01.910Z", "dateUpdated": "2026-09-22T15:38:46.170Z"}, "containers": {"cna": {"title": "radare2: Heap out-of-bounds read in radare2 ELF PN_XNUM handling", "problemTypes": [{"descriptions": [{"cweId": "CWE-125", "lang": "en", "description": "CWE-125: Out-of-bounds Read", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "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:H", "version": "3.1"}}], "references": [{"name": "https://github.com/radareorg/radare2/security/advisories/GHSA-jqfq-hvcp-xh4p", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/radareorg/radare2/security/advisories/GHSA-jqfq-hvcp-xh4p"}, {"name": "https://github.com/radareorg/radare2/issues/26223", "tags": ["x_refsource_MISC"], "url": "https://github.com/radareorg/radare2/issues/26223"}, {"name": "https://github.com/radareorg/radare2/pull/26178", "tags": ["x_refsource_MISC"], "url": "https://github.com/radareorg/radare2/pull/26178"}, {"name": "https://github.com/radareorg/radare2/commit/9449b07579c19b6b187c1a0918fbec2cef1a036e", "tags": ["x_refsource_MISC"], "url": "https://github.com/radareorg/radare2/commit/9449b07579c19b6b187c1a0918fbec2cef1a036e"}, {"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": "2026-09-22T15:09:01.910Z"}, "descriptions": [{"lang": "en", "value": "radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's ELF PN_XNUM handling was vulnerable because the ELF parser allocated the program-header array using the resolved PN_XNUM count but several consumers still iterated with the original e_phnum value of 65535. The vulnerability is triggered by processing a crafted ELF file with e_phnum = 0xffff and a much smaller resolved count in shdr[0].sh_info. Consumers iterated beyond the allocated program-header array. This can cause a heap out-of-bounds read and process termination, resulting in denial of service; memory disclosure and code execution have not been demonstrated. This issue is fixed in version 6.2.0."}], "source": {"advisory": "GHSA-jqfq-hvcp-xh4p", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/radareorg/radare2/issues/26223", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-22T15:38:19.474912Z", "id": "CVE-2026-81879", "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": "2026-09-22T15:38:46.170Z"}}]}}

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