CVE-2026-40517Public exploit

Arbitrary command execution via unsanitized PDB symbols

Published Apr 22, 2026 · Updated Apr 22, 2026

Command injection in radare2 before 6.1.4 allows attackers to execute arbitrary OS commands through a crafted PDB file. The PDB parser's print_gvars() function places a raw symbol name inside an fN flag-rename command, allowing newline and command metacharacters to escape its quoted context. Execution requires a user to open the associated binary and run idp, which evaluates the generated commands with that user's operating-system privileges.

CVSS severity8.4
High
EPSS probability1.05%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in radare2 before 6.1.4 allows attackers to execute arbitrary OS commands through a crafted PDB file. The PDB parser's print_gvars() function places a raw symbol name inside an fN flag-rename command, allowing newline and command metacharacters to escape its quoted context. Execution requires a user to open the associated binary and run idp, which evaluates the generated commands with that user's operating-system privileges.

The record

CVE
CVE-2026-40517
Published
Apr 22, 2026
Updated
Apr 22, 2026
Vendor
radareorg
Product
radare2
Classifications
CWE-78, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 22, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <6.1.4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

radareorg · radare2version=0 <6.1.4

Published CVSS scores

7.8VulnCheckCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.4VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1204.002User Execution: Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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