CVE-2025-66620

An unused webshell in MicroServer allows unlimited login attempts, with sudo rights on certain files and directories. An attacker with admin access to MicroServer can gain limited shell access, enabling persistence through reverse shells, and the ability to modify or remove data stored in the file system.

CVSS v3 8.0 HIGH

8.0^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.1 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-006-01.json	Third Party Advisory
https://www.cisa.gov/news-events/ics-advisories/icsa-26-006-01	Third Party Advisory US Government Resource

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:columbiaweather:weather_microserver_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:columbiaweather:weather_microserver:-:*:*:*:*:*:*:*

History

30 Sep 2026, 23:10

Type	Values Removed	Values Added
Summary		(es) Una webshell sin usar en MicroServer permite intentos de inicio de sesión ilimitados, con derechos de sudo en ciertos archivos y directorios. Un atacante con acceso de administrador a MicroServer puede obtener acceso limitado a la shell, lo que permite la persistencia a través de shells inversas, y la capacidad de modificar o eliminar datos almacenados en el sistema de archivos.

Information

Published : 2026-01-07 21:15

Updated : 2026-10-07 09:10

NVD link : CVE-2025-66620

Mitre link : CVE-2025-66620

CVE.ORG link : CVE-2025-66620

JSON object : View

Products Affected

columbiaweather

weather_microserver_firmware
weather_microserver

CWE

CWE-553

Command Shell in Externally Accessible Directory

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