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.
Advisories

No advisories yet.

Fixes

Solution

Columbia Weather Systems recommends users update the MicroServer firmware to version MS_4.1_14142 or later. To obtain the update, users should contact Columbia Weather Systems Support directly via email (support@columbiaweather.com) or phone (503-629-0887) for assistance.


Workaround

No workaround given by the vendor.

History

Wed, 07 Jan 2026 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 07 Jan 2026 20:15:00 +0000

Type Values Removed Values Added
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.
Title Columbia Weather Systems MicroServer Command Shell in Externally Accessible Directory
Weaknesses CWE-553
References
Metrics cvssV3_1

{'score': 8, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.6, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: icscert

Published:

Updated: 2026-01-07T20:16:28.659Z

Reserved: 2025-12-08T19:17:55.938Z

Link: CVE-2025-66620

cve-icon Vulnrichment

Updated: 2026-01-07T20:16:09.218Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-01-07T21:15:59.170

Modified: 2026-01-08T18:08:54.147

Link: CVE-2025-66620

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses