CVE-2026-81883

Published Sep 22, 2026

Last updated 4 days ago

Overview

Description
radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's Lua 5.3 bytecode function parser was vulnerable because the Lua 5.3 bytecode function parser read fixed function-metadata fields immediately after a function-name string without checking the remaining buffer length. The vulnerability is triggered by opening or inspecting a crafted Lua 5.3 bytecode file whose function-name string ends at the input-buffer boundary. The parser read two integers and three one-byte fields beyond the allocated input buffer. This can cause invalid parser results or process termination; no attacker-observable memory disclosure has been demonstrated. This issue is fixed in version 6.2.0.
Source
security-advisories@github.com
NVD status
Analyzed
Products
radare2

Risk scores

CVSS 3.1

Type
Secondary
Base score
3.3
Impact score
1.4
Exploitability score
1.8
Vector string
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Severity
LOW

Weaknesses

security-advisories@github.com
CWE-125

Social media

Hype score
Not currently trending

Configurations