CVE-2026-6942: radare2-mcp version 1.6.0 and earlier contains an os command injection vulnerability that allows remote attack

Q: How do I fix CVE-2026-6942?

radare2 mcp server: upgrade to 1.7.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-6942 being exploited?

CVE-2026-6942 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-6942 affect?

CVE-2026-6942 affects radare2 mcp server. Severity is critical (CVSS 9.8). 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

Q: How urgent is CVE-2026-6942?

Priority 67/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2026-6942 is a critical-severity flaw (CVSS 9.8) affecting radare2 mcp server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Critical severity
Public exploit reference
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.9% (top 20%)
CISA exploited list	No
Weakness	CWE-78
Published	2026-04-23
Last modified	2026-10-26

Publisher (CNA): VulnCheck · Vendor: radare

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-23 21:16 UTCPublished CVE record published
2026-10-26 22:10 UTCUpdated Record last modified

radare radare2 mcp server UPGRADE

Affected: < 1.7.0

Fixed in: 1.7.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy radare2-mcp-server || rpm -q radare2-mcp-server || radare2-mcp-server --version

2. UPGRADE to 1.7.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade radare2-mcp-server

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade radare2-mcp-server

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-6942?

radare2 mcp server: upgrade to 1.7.0. Exact commands for each OS are on this page.

Is CVE-2026-6942 being exploited?

CVE-2026-6942 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-6942 affect?

CVE-2026-6942 affects radare2 mcp server. Severity is critical (CVSS 9.8). 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

How urgent is CVE-2026-6942?

Priority 67/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

References

← Back to latest CVEs