CVE-2026-81879Medium· 5.5▾ TwilightPoC availableradare2 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 s…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 30.3 · likelihood 0 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 23.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.2%
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.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-81883Low· 3.3radare2 is a UNIX-like reverse engineering framework and command-line toolset
CVE-2026-81884Low· 2.5radare2 is a UNIX-like reverse engineering framework and command-line toolset
CVE-2026-81881Low· 3.3radare2 is a UNIX-like reverse engineering framework and command-line toolset
CVE-2026-81882Low· 3.3radare2 is a UNIX-like reverse engineering framework and command-line toolset
CVE-2026-81878Medium· 5.5radare2 is a UNIX-like reverse engineering framework and command-line toolset
CVE-2026-81880Medium· 5.5radare2 is a UNIX-like reverse engineering framework and command-line toolset