SEPTEMBER 18, 2026
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Case File

CVE-2026-58123

CRITICAL · CVSS 9.8 EPSS 0.93% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-09 · Last synced 2026-08-08

CyberRota Analysis

AI-Generated

Hermes WebUI versions prior to 0.51.788 are vulnerable to an unauthenticated remote code execution flaw that enables attackers to execute arbitrary shell commands by exploiting the embedded terminal API endpoints. This critical vulnerability allows for full command execution as the server process user through a series of unauthenticated HTTP requests, posing a significant risk to system integrity. Organizations using affected versions should prioritize immediate patching to mitigate potential exploitation.

Public Exploit Signal

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

Detected Signals
remote code execution code execution

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

CVE
CVE-2026-58123
Severity
CRITICAL
CVSS
9.8
EPSS
0.93%

Original NVD Description

Hermes WebUI before 0.51.788 contains an unauthenticated remote code execution vulnerability that allows remote attackers to execute arbitrary shell commands by accessing the embedded terminal API endpoints without credentials. Attackers can create a session, attach a PTY shell, and write arbitrary commands through the terminal input endpoint to achieve full command execution as the server process user via four sequential unauthenticated HTTP requests.