CVE-2026-6942

Name: CVE-2026-6942
Creator: NVD / NIST
Published: 2026-04-23T21:16:06.947+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.3/10EPSS 1.92%

Last modified Jun 17, 2026

CVE-2026-6942 is a critical-severity vulnerability rated 9.3/10 on the CVSS scale. radare2-mcp version 1.6.0 and earlier contains an os command injection vulnerability that allows remote attackers to execute arbitrary commands by bypassing the command filter through shell metacharacters in user-controlled input passed to r2_cmd_str(). Attackers can inject shell metacharacters through the jsonrpc interface parameters to achieve remote code execution on the host running radare2-mcp without requiring authentication.. EPSS estimates a 1.92% chance of exploitation in the next 30 days.

Description

radare2-mcp version 1.6.0 and earlier contains an os command injection vulnerability that allows remote attackers to execute arbitrary commands by bypassing the command filter through shell metacharacters in user-controlled input passed to r2_cmd_str(). Attackers can inject shell metacharacters through the jsonrpc interface parameters to achieve remote code execution on the host running radare2-mcp without requiring authentication.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS 4.0

9.3/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/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

EPSS Probability

1.92%

77.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-78

Affected Software

Vendor	Product	Versions
Radare	Radare2 Mcp Server	< 1.7.0

References

https://github.com/radareorg/radare2-mcp/commit/482cde6500009112a8bc0b3fa8d2ef6180581ec0Patch
https://github.com/radareorg/radare2-mcp/issues/45Exploit, Issue Tracking
https://www.vulncheck.com/advisories/radare2-mcp-os-command-injection-via-shell-metacharacter-bypassThird Party Advisory

Timeline

Published: Apr 23, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-6942?

How severe is CVE-2026-6942?

CVE-2026-6942 has a CVSS score of 9.3/10 (CRITICAL severity). The EPSS model estimates a 1.92% probability of exploitation in the next 30 days.

How do I fix CVE-2026-6942?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-6942?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST