CVE-2026-81881: radare2 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…

PriorityP418medium4.4CVSS 3.1

AVLACLPRNUIRSUCLINAL

EPSS

0.13%

2.5th percentile

radare2 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.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
radare	radare2	< 6.2.0	6.2.0
radareorg	radare2	< 6.2.0	6.2.0

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