CVE-2025-66620

Columbia Weather Systems MicroServer Command Shell in Externally Accessible Directory

State
Published
Severity
8.6 High
Published
Jan 7, 2026
Updated
Jan 7, 2026
Reserved
Dec 8, 2025

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
4.08.6 HighCVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:Nicscert
3.18.0 HighCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hicscert

Weaknesses

  • CWE-553 Command Shell in Externally Accessible Directory

Affected Products

ProductVersions
MicroServerColumbia Weather Systems
  • before MS_4.1_14142Affected

References

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