What is the CVSS score of CVE-2026-26068?

CVE-2026-26068 has a CVSS 3.1 base score of 9.9 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H. EPSS exploitation probability: 0.6%.

Which versions of Emp3r0r are affected by CVE-2026-26068?

A critical remote code execution vulnerability in emp3r0r C2 infrastructure allows unauthenticated attackers to execute arbitrary commands on Linux systems through malicious agent metadata.. A patch is available.

Is there a public PoC exploit available for CVE-2026-26068?

Yes, a public proof-of-concept exploit is available for CVE-2026-26068. Prioritise patching immediately. EPSS: 0.6%.

How to fix or mitigate CVE-2026-26068?

Within 24 hours: Identify all systems running emp3r0r and isolate affected C2 infrastructure from production networks. Within 7 days: Apply vendor patch to version 3.21.1 or later on all emp3r0r instances and validate deployment. Within 30 days: Conduct forensic analysis of C2 logs for signs of exploitation, rotate all agent credentials, and implement network monitoring for suspicious agent check-ins.

Emp3r0r CVE-2026-26068

CRITICAL

Command Injection (CWE-77)

2026-02-12 security-advisories@github.com

RCE Linux Command Injection Emp3r0r

9.9

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

9.9 CRITICAL

AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:02 vuln.today

PoC Detected

Feb 25, 2026 - 15:47 vuln.today

Public exploit code

Patch released

Feb 25, 2026 - 15:47 nvd

Patch available

CVE Published

Feb 12, 2026 - 22:16 nvd

CRITICAL 9.9

DescriptionGitHub Advisory

emp3r0r is a stealth-focused C2 designed by Linux users for Linux environments. Prior to 3.21.1, untrusted agent metadata (Transport, Hostname) is accepted during check-in and later interpolated into tmux shell command strings executed via /bin/sh -c. This enables command injection and remote code execution on the operator host. This vulnerability is fixed in 3.21.1.

AnalysisAI

Command injection in emp3r0r C2 framework before 3.21.1. Untrusted agent metadata (Transport, Hostname) injected into commands. PoC and patch available. EPSS 0.61%.