CVE-2026-40527

| EUVD-2026-23534 HIGH
2026-04-17 VulnCheck GHSA-4pc8-6qgf-fgv2
8.5
CVSS 4.0
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CVSS VectorNVD

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
P
Scope
X

Lifecycle Timeline

3
Re-analysis Queued
Apr 17, 2026 - 21:22 vuln.today
cvss_changed
CVSS Changed
Apr 17, 2026 - 21:22 NVD
7.8 (HIGH) 8.5 (HIGH)
Analysis Generated
Apr 17, 2026 - 21:11 vuln.today

DescriptionNVD

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.

AnalysisAI

Command injection in radare2's DWARF parsing (afsv/afsvj commands) allows local attackers to execute arbitrary shell commands by embedding malicious r2 command sequences in specially crafted ELF binaries. When a user opens the malicious binary and runs analysis commands (aaa followed by afsvj), unsanitized DW_TAG_formal_parameter names are interpolated into pfq command strings, triggering code execution. …

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RemediationAI

Within 24 hours: identify all radare2 installations in your environment and determine current versions. Within 7 days: apply vendor-released patch (commit bc5a890 or later stable release) to all affected radare2 instances and verify via version check. …

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CVE-2026-40527 vulnerability details – vuln.today

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