CVE-2026-81879

{"id": "CVE-2026-81879", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-81879", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-22T15:38:19.474912Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.1, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 4.2, "exploitabilityScore": 1.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "radareorg", "product": "radare2", "versions": [{"status": "affected", "version": "< 6.2.0"}]}]}], "published": "2026-09-22T16:18:02.617", "references": [{"url": "https://github.com/radareorg/radare2/commit/9449b07579c19b6b187c1a0918fbec2cef1a036e", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/radareorg/radare2/issues/26223", "tags": ["Exploit", "Issue Tracking", "Mitigation", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/radareorg/radare2/pull/26178", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/radareorg/radare2/releases/tag/6.2.0", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/radareorg/radare2/security/advisories/GHSA-jqfq-hvcp-xh4p", "tags": ["Patch", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/radareorg/radare2/issues/26223", "tags": ["Exploit", "Issue Tracking", "Mitigation", "Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-125"}]}], "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."}], "lastModified": "2026-09-25T16:53:48.707", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:radare:radare2:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "89E67591-1BCF-49F0-B047-71FCB5524CDB", "versionEndExcluding": "6.2.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}