CVE-2026-108387

Received Received - Intake

Heap-based Buffer Overflow in radare2 Binary Analysis Tool

Publication date: 2026-11-04

Last updated on: 2026-11-04

Assigner: GitHub, Inc.

Description

radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.2, attacker-controlled data from several binary format plugins could reach RBinInfo->bclass. Opening or analyzing a crafted Pebble or Sega Mega Drive binary could place a dbg:// URI in bclass, causing radare2 to reopen the input through the debug input/output plugin and ultimately pass attacker-controlled arguments to execvp(). This could execute commands with the privileges of the radare2 process without an explicit debugging command. This issue is fixed in version 6.2.2.

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Meta Information

Published

2026-11-04

Last Modified

2026-11-04

Generated

2026-11-05

AI Q&A

2026-11-05

EPSS Evaluated

N/A

NVD

CVE-2026-108387

Affected Vendors & Products

Vendor	Product	Version / Range
radareorg	radare2	< 6.2.2

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-78	The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

Attack-Flow Graph

Executive Summary

This vulnerability in radare2 (before version 6.2.2) involves attacker-controlled data in binary format plugins manipulating the RBinInfo->bclass field. Crafted Pebble or Sega Mega Drive binaries could inject a dbg:// URI into bclass, causing radare2 to reopen the file via the debug plugin. This leads to execution of arbitrary commands with the privileges of the radare2 process without requiring an explicit debugging command.

Impact Analysis

An attacker could exploit this to execute arbitrary code on your system with the same permissions as radare2. This could lead to data theft, system compromise, or further attacks if radare2 runs with elevated privileges. Users analyzing untrusted binaries are at risk.

Compliance Impact

This vulnerability could lead to unauthorized code execution, potentially violating GDPR's integrity principle or HIPAA's security requirements for protecting sensitive data. Organizations may face compliance violations if exploited.

Mitigation Strategies

Update radare2 to version 6.2.2 or later to address the vulnerability. Avoid analyzing untrusted Pebble or Sega Mega Drive binaries until patched.

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