CVE-2026-81880: medium-severity vulnerability in radareorg radare2
radare2: Uncontrolled resource consumption in radare2 PEF loader
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.5epss 0.1%
radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's Apple Preferred Executable Format loader was vulnerable because the PEF loader accepted relocSecCount values that were not bounded by the number of sections or complete relocation records in the input. The vulnerability is triggered by normal binary-format auto-detection of a small crafted Apple PEF file. The loader could perform up to 268,435,456 relocation-section iterations and repeated buffer operations after record offsets passed the end of the file. This can cause denial of service through excessive CPU consumption and prolonged processing. 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:H
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%