CVE-2026-58123CWE-306

Hermes WebUI < 0.51.788 Unauthenticated RCE via Terminal API

Critical · published July 9, 2026

CVSS v4.0
9.3
EPSS
5%
Percentile
91.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.04649 · 91.7th percentile
Weakness
CWE-306 · Missing Authentication for Critical Function
Published
2026-07-09T21:14Z
EPSS history
Timeline
  • 09 JUL 21:14Z
    Hermes WebUI < 0.51.788 Unauthenticated RCE via Terminal API
    cvelistv5