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CVE-2026-40527— radare2 Command Injection via DWARF Parameter Names

Quick assessment

Affected
radareorg radare2
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Radare2是Radare开源的一个面向 Unix 极客的 Libre 反向框架。 Radare2 bc5a890之前版本存在安全漏洞，该漏洞源于afsv/afsvj命令路径存在命令注入，特制ELF二进制文件可将恶意r2命令序列嵌入为DWARF DW_TAG_formal_parameter名称，可能导致执行任意shell命令。

CVSS 7.8 · High EPSS 1.45% · P72

Affected Version Matrix 1

VendorProduct Version RangeStatus
radareorg radare2 < bc5a89033db3ecb5b1f7bf681fc6ba4dcfc14683 affected
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I. Basic Information for CVE-2026-40527

Vulnerability Information
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Vulnerability Title
radare2 Command Injection via DWARF Parameter Names
Source: CVE Program / CVE List V5
Vulnerability Description
radare2 prior to commit bc5a890 contains a command injection vulnerability in the afsv/afsvj command path where crafted ELF binaries can embed malicious r2 command sequences as DWARF DW_TAG_formal_parameter names. Attackers can craft a binary with shell commands in DWARF parameter names that execute when radare2 analyzes the binary with aaa and subsequently runs afsvj, allowing arbitrary shell command execution through the unsanitized parameter interpolation in the pfq command string.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Radare2 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Radare2是Radare开源的一个面向 Unix 极客的 Libre 反向框架。 Radare2 bc5a890之前版本存在安全漏洞，该漏洞源于afsv/afsvj命令路径存在命令注入，特制ELF二进制文件可将恶意r2命令序列嵌入为DWARF DW_TAG_formal_parameter名称，可能导致执行任意shell命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
radareorg radare2 0 ~ bc5a89033db3ecb5b1f7bf681fc6ba4dcfc14683 -

II. Public POCs for CVE-2026-40527

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III. Intelligence Information for CVE-2026-40527

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Patches & Fixes for CVE-2026-40527 (2)

IV. Related Vulnerabilities

Same product: radare2
Same vendor: radareorg
Same weakness: CWE-78

V. Comments for CVE-2026-40527

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