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CVE-2025-61939

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CVE-2025-61939

Published: Jan 7, 2026

Modified: Jan 7, 2026

PUBLISHED

CVSS v3.1

8.8

HIGH

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.

VendorProductVersions

Columbia Weather Systems

MicroServer

affected
0 - < MS_4.1_14142

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

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