CVE-2025-61939 - CVE House
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Status published High CVE-2025-61939

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

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • UsrPacific/Columbia Weather Systems reported these vulnerabilities to CISA.

References

More from Columbia Weather Systems

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CVE-2025-66620
Columbia Weather Systems MicroServer Command Shell in Externally Accessible Directory
High 8.6
CVE-2025-64305
Columbia Weather Systems MicroServer Cleartext Storage in a File or on Disk
High 7.1

Affected Vendor

Columbia Weather Systems

View all reports →

Affected Software

MicroServer
Vulnerable Versions:
0

Timeline

Official Publish: January 7th, 2026
Last Modified: January 7th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-923

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.