CVE-2026-26068
CRITICAL WAF: High
CVSS 9.9
Published: 2026-02-12
CWE-77 CWE-78 CWE-78
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.
WAF Coverage Analysis
Command Injection
High WAF Coverage
OWASP: A03:2021 Injection
932xxx - Remote Code Execution
OS Command Injection
High WAF Coverage
OWASP: A03:2021 Injection
932xxx - Remote Code Execution
OS Command Injection
High WAF Coverage
OWASP: A03:2021 Injection
932xxx - Remote Code Execution
Affected Software
| Vendor | Product | Version |
|---|---|---|
| jm33-m0 | emp3r0r | up to 3.21.1 |
References
- github.com (Patch)
- github.com (Product, Release Notes)
- github.com (Exploit, Vendor Advisory)