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OpenAdvisories
High · 8.0 CVE-2025-66620 EUVD-2026-1166GHSA-mh3m-m8m5-x43f

Columbia Weather Systems MicroServer Command Shell in Externally Accessible Directory

Published Jan 7, 2026 · Updated Jan 7, 2026 · Assigned by icscert

Description

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.

Affected products

VendorProductAffectedFixed
Columbia Weather Systems MicroServer < MS_4.1_14142 MS_4.1_14142

Advisories 1

References