OCTOBER 14, 2026
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Case File

CVE-2026-61554

HIGH · CVSS 7.5 EPSS 0.71% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-15 · Last synced 2026-10-13

CyberRota Analysis

AI-Generated

The emp3r0r command-and-control (C2) framework for Linux is vulnerable to exploitation due to its `http_poll` transport accepting unauthenticated HTTP polling sessions prior to completing MsgAuth authentication. This flaw allows remote attackers to create arbitrary polling sessions, potentially leading to resource exhaustion and unauthorized pre-auth C2 processing. Organizations using versions prior to 4.2.5 should prioritize patching to mitigate the risk of resource abuse and unauthorized access.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-61554
Severity
HIGH
CVSS
7.5
EPSS
0.71%
Linux

Original NVD Description

emp3r0r is a C2 designed by Linux users for Linux environments. Prior to version 4.2.5, the `http_poll` C2 transport accepts attacker-controlled HTTP polling sessions before CBOR `MsgAuth` authentication is completed. A remote unauthenticated attacker can create arbitrary polling sessions and send request bodies that are forwarded into the C2 dispatch path. This can consume server resources and trigger pre-auth C2 processing. Version 4.2.5 patches the issue.