radareorg radare2 up to 6.1.x Apple Preferred Executable Format Loader resource consumption

Summaryinfo

A vulnerability identified as problematic has been detected in radareorg radare2 up to 6.1.x. Affected is an unknown function of the component Apple Preferred Executable Format Loader. The manipulation leads to resource consumption. This vulnerability is listed as CVE-2026-81880. The attack must be carried out locally. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in radareorg radare2 up to 6.1.x. It has been rated as problematic. This issue affects some unknown functionality of the component Apple Preferred Executable Format Loader. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. The summary by CVE is:

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 268,435,456 relocation-section iterations and repeated buffer operations after record offsets passed the end of the file. This can cause denial of service through excessive CPU consumption and prolonged processing. This issue is fixed in version 6.2.0.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-81880 since 08/27/2026. The exploitation is known to be easy. An attack has to be approached locally. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available.

Upgrading to version 6.2.0 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Programming Tool Software

Vendor

• radareorg

Name

• radare2

Version

• 6.0
• 6.1

License

• open-source

Website

• Product: https://github.com/radareorg/radare2/

CPE 2.3info

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• 🔒

CPE 2.2info

• 🔒
• 🔒

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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