Vulnerability Description
radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's NE relocation fixup-chain parser was vulnerable because the NE relocation parser followed fixup chains without an active iteration limit or cycle detection. The vulnerability is triggered by opening a crafted NE executable whose in-bounds relocation entry points back to itself instead of reaching 0xffff. The parser repeatedly processed the same relocation and allocated another relocation object on each iteration. This can cause denial of service through continuous CPU and memory consumption. This issue is fixed in version 6.2.0.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Radare | Radare2 | < 6.2.0 |
Related Weaknesses (CWE)
References
- https://github.com/radareorg/radare2/commit/93d794caa7c2f08413106255d49546e544c1Patch
- https://github.com/radareorg/radare2/issues/26225ExploitIssue TrackingMitigation
- https://github.com/radareorg/radare2/pull/26192Patch
- https://github.com/radareorg/radare2/releases/tag/6.2.0Release Notes
- https://github.com/radareorg/radare2/security/advisories/GHSA-43wr-4j49-rcxjPatchVendor Advisory
- https://github.com/radareorg/radare2/issues/26225ExploitIssue TrackingMitigation
FAQ
What is CVE-2026-81885?
CVE-2026-81885 is a vulnerability with a CVSS score of 5.5 (MEDIUM). radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's NE relocation fixup-chain parser was vulnerable because the NE relocation parser followed fixup...
How severe is CVE-2026-81885?
CVE-2026-81885 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-81885?
Check the references section above for vendor advisories and patch information. Affected products include: Radare Radare2.