PatchTheCVECVE-2026-81880: radare2 is a UNIX-like reverse engineering framework and command-line toolset
CVE-2026-81880 is a medium-severity flaw (CVSS 5.5) affecting radare2. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Last updated 2026-09-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-81880?
radare2: upgrade to 6.2.0. Exact commands for each OS are on this page.
Is CVE-2026-81880 being exploited?
CVE-2026-81880 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-81880 affect?
CVE-2026-81880 affects radare2. Severity is medium (CVSS 5.5). 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 t
How urgent is CVE-2026-81880?
Priority 20/100. No elevated risk signals yet.
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