23 Oct 2026 15:48:27 UTC
radare2: Heap out-of-bounds read in radare2 Mach-O Swift metadata parser
cve-program · CVE-2026-81881 · Published
CVE-2026-81881
radare2: Heap out-of-bounds read in radare2 Mach-O Swift metadata parser
CVSS 3.1 3.3 LOWCheck source for fixed versionsKEV status unknown
cve-program · CVE-2026-81881
Publishedradare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's Mach-O Swift field-metadata parser was vulnerable because a relative Swift field pointer could be lower than the field-metadata section base, making subtraction produce a negative logical index. The vulnerability is triggered by parsing Swift type and class metadata from a crafted Mach-O file. The derived index was used to read four bytes immediately before the allocated field-metadata buffer. This can cause incorrect metadata processing or process termination; no attacker-observable memory disclosure has been demonstrated. This issue is fixed in version 6.2.0.
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