Out-of-bounds Read in Radare Radare2
CVE-2026-81884
radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's Mach-O LC_DATA_IN_CODE parser was vulnerable because the Mach-O LC_DATA_IN_CODE parser trusted dataoff and datasize and allowed a final partial record to be processed. The vulnerability is triggered by opening a crafted Mach-O file while the non-default bin.verbose option is enabled. When datasize was not a multiple of data_in_code_entry, the last iteration read beyond the allocated buffer. This can cause a heap out-of-bounds read and possible process termination; no attacker-observable memory disclosure has been demonstrated. This issue is fixed in version 6.2.0.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 2.5 (Low). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.002 (4.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 4.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · 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-c2g2-2mc7-3x5w (Patch, Vendor Advisory)
- github.com/radareorg/radare2/issues/26226 (Exploit, Mitigation, Issue Tracking, Vendor Advisory)
- github.com/radareorg/radare2/pull/26193 (Patch)
- github.com/radareorg/radare2/commit/a73de09fea7516f65c14917d66113316ec7e7d6e (Patch)
- github.com/radareorg/radare2/releases/tag/6.2.0 (Release Notes)
Frequently asked questions
- What is CVE-2026-81884?
- CVE-2026-81884 is a low-severity vulnerability in Radare Radare2, classified under Out-of-bounds Read. CVSS score: 2.5/10. Published 2026-09-22.
- How severe is CVE-2026-81884?
- Low severity. CVSS v3 base score is 2.5 out of 10.