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vuln-cve/data/2026/81xxx/CVE-2026-81879.json
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{
"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"
}
}
]
}
}