Out-of-bounds Read in Radare Radare2
CVE-2026-81882
radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's binary property-list Unicode parser was vulnerable because the binary-property-list Unicode parser underallocated an uninitialized UTF-8 destination and did not guarantee NUL termination. The vulnerability is triggered by running the explicit pFB or pFBj commands on untrusted binary property-list data. The json encoder treated the converted data as a nul-terminated c string and could continue reading beyond the allocation. This can cause disclosure of uninitialized or adjacent heap contents in JSON output and possible process termination. This issue is fixed in version 6.2.0.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.002 (6.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 6.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.000
Affected products
- Radare Radare2
- Radareorg Radare2 — versions < 6.2.0
Weakness classification (CWE)
References
- github.com/radareorg/radare2/security/advisories/GHSA-r5cr-f9p6-5pvj (Patch, Vendor Advisory)
- github.com/radareorg/radare2/issues/26227 (Exploit, Mitigation, Issue Tracking, Vendor Advisory)
- github.com/radareorg/radare2/commit/38d82a949626dba3783f40508bb66179e631fa45 (Patch)
- github.com/radareorg/radare2/releases/tag/6.2.0 (Release Notes)
Frequently asked questions
- What is CVE-2026-81882?
- CVE-2026-81882 is a low-severity vulnerability in Radare Radare2, classified under Out-of-bounds Read. CVSS score: 3.3/10. Published 2026-09-22.
- How severe is CVE-2026-81882?
- Low severity. CVSS v3 base score is 3.3 out of 10.