CVE-2026-81879

5.5 MEDIUMpublic exploit available

Published 2026-09-22 · Updated 2026-09-25

AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.

NVD description

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.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Weaknesses

CWE-125

Vendors

radare

Products

radare2

Public exploit & PoC references

https://github.com/radareorg/radare2/commit/9449b07579c19b6b187c1a0918fbec2cef1a036e[Patch]
https://github.com/radareorg/radare2/issues/26223[Exploit, Issue Tracking, Mitigation, Vendor Advisory]
https://github.com/radareorg/radare2/pull/26178[Patch]
https://github.com/radareorg/radare2/releases/tag/6.2.0[Release Notes]
https://github.com/radareorg/radare2/security/advisories/GHSA-jqfq-hvcp-xh4p[Patch, Vendor Advisory]
https://github.com/radareorg/radare2/issues/26223[Exploit, Issue Tracking, Mitigation, Vendor Advisory]

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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