CVEvulnerability
CVE-2026-81881
4.4 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2026-09-22
- Last modified
- 2026-09-25
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 3.3 LOW — CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
- CVSS 3.1 ([email protected])
- 4.4 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L
- Weaknesses
- CWE-125, CWE-191
Description
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.
Affected configurations
• radare radare2 (< 6.2.0)
Related
References
- https://github.com/radareorg/radare2/commit/1da6e782df220edf56138ef5fe4f33745b04db74 Patch
- https://github.com/radareorg/radare2/issues/26229 Exploit, Issue Tracking, Mitigation, Vendor Advisory
- https://github.com/radareorg/radare2/releases/tag/6.2.0 Release Notes
- https://github.com/radareorg/radare2/security/advisories/GHSA-q4w7-225g-64j9 Patch, Vendor Advisory