CVE Vulnerabilities

CVE-2025-66620

Command Shell in Externally Accessible Directory

Published: Jan 07, 2026 | Modified: Jan 22, 2026
CVSS 3.x
7.2
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
Ubuntu
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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.

Weakness

A possible shell file exists in /cgi-bin/ or other accessible directories. This is extremely dangerous and can be used by an attacker to execute commands on the web server.

Affected Software

NameVendorStart VersionEnd Version
Weather_microserver_firmwareColumbiaweather*MS_4.1_14142 (excluding)

Potential Mitigations

References