CVE-2025-61939

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

MEDIUM
4.4
CVSS Score
Published: January 7, 2026 at 07:56 PM UTC
Updated: October 7, 2026 at 09:10 AM UTC
2 products affected across 1 vendorWeather Microserver FirmwareWeather Microserver

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Severity
MEDIUM4.4
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < MS_4.1_14142
Affected range stops below MS_4.1_14142, so it looks safe — our inference, not a vendor statement
columbiaweather-weather-microserver (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-923

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