CVE-2026-81881: low-severity vulnerability in radareorg radare2
radare2: Heap out-of-bounds read in radare2 Mach-O Swift metadata parser
Published
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8Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 3.3epss 0.2%
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.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Affected products
radareorg · radare2Related CVEs — radareorg radare2
In the same product, most dangerous first.
CVE-2020-15121HIGHCommand injection in Radare2EPSS 1.6%CVE-2026-40499HIGHradare2 < 6.1.4 Command Injection via PDB Parser print_gvars()EPSS 1.2%CVE-2026-40517HIGHradare2 < 6.1.4 Command Injection via PDB Parser Symbol NamesEPSS 1.1%CVE-2026-40527HIGHradare2 Command Injection via DWARF Parameter NamesEPSS 0.9%CVE-2025-1744CRITICALOut-of-bounds Write in radare2EPSS 0.5%CVE-2025-1864CRITICALBuffer Overflow and Potential Code Execution in Radare2EPSS 0.5%