Command Injection Vulnerability in radare2 PDB Parser
CVE-2026-40499

8.4HIGH

Key Information:

Vendor

Radareorg

Status
Radare2
Vendor
CVE Published:
15 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-40499?

radare2, prior to version 6.1.4, is susceptible to a command injection vulnerability located in the PDB parser's print_gvars() function. This vulnerability allows attackers to execute arbitrary commands by inserting a newline byte into the PE section header name field of a maliciously crafted PDB file. An attacker could exploit this flaw by embedding specially crafted section names, which would execute unauthorized r2 commands during the processing of the file using the idp command.

Affected Version(s)

radare2 0 < 6.1.4

radare2 5590c87deeb7eb2a106fd7aab9ca88bfeebb7397

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-40499 - Proof of Concept

References

https://blog.calif.io/p/mad-bugs-discovering-a-0-day-in-zero
technical-descriptionexploit
https://github.com/radareorg/radare2/pull/25731
issue-tracking
https://github.com/radareorg/radare2/issues/25752
issue-tracking

CVSS V4

Score:
8.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

junrong of Calif
.