Columbia Weather Systems MicroServer vulnerabilities

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Published CVEs affecting Columbia Weather Systems MicroServer: 3 record(s), with affected versions and fixes.

CVE-2025-66620 High · 7.2 CWE-553 Jan 7, 2026

Columbia Weather Systems MicroServer Command Shell in Externally Accessible Directory

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.

CVE-2025-64305 Medium · 6.5 CWE-313 Jan 7, 2026

Columbia Weather Systems MicroServer Cleartext Storage in a File or on Disk

MicroServer copies parts of the system firmware to an unencrypted external SD card on boot, which contains user and vendor secrets. An attacker can utilize these plaintext secrets to modify the vendor firmware, or gain admin access to the web portal.

CVE-2025-61939 Medium · 4.4 CWE-923 Jan 7, 2026

Columbia Weather Systems MicroServer Improper Restriction of Communication Channel to Intended Endpoints

An unused function in MicroServer can start a reverse SSH connection to a vendor registered domain, without mutual authentication. An attacker on the local network with admin access to the web server, and the ability to manipulate DNS responses, can redirect the SSH connection to an attacker controlled device.