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    CVE-2025-61939

    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.

    Published:Jan 7, 2026
    Last Modified:Jan 22, 2026
    EPS:Jan 7, 2026
    EPSS Score:0.00077
    CVSS Score:8.8

    Affected Products

    Vendor
    Columbiaweather
    Product
    Weather Microserver
    Vendor
    Columbiaweather
    Product
    Weather Microserver Firmware

    Exploits

    No exploit reference

    Related CVEs

    CVE-2025-66620 (CVSS 8.6) — An unused webshell in MicroServer allows unlimited login attempts, with sudo rights on certain files and direc…
    CVE-2018-18875 (CVSS 5.4) — In firmware version MS_2.6.9900 of Columbia Weather MicroServer, a stored Cross-site scripting (XSS) vulnerabi…
    CVE-2018-18876 (CVSS 5.3) — In firmware version MS_2.6.9900 of Columbia Weather MicroServer, a readouts_rd.php directory traversal issue m…
    CVE-2018-18877 (CVSS 8.8) — In firmware version MS_2.6.9900 of Columbia Weather MicroServer, an authenticated web user can access an alter…
    CVE-2018-18878 (CVSS 7.5) — In firmware version MS_2.6.9900 of Columbia Weather MicroServer, the BACnet daemon does not properly validate …
    CVE-2018-18879 (CVSS 8.8) — In firmware version MS_2.6.9900 of Columbia Weather MicroServer, an authenticated web user can pipe commands d…
    CVE-2018-18880 (CVSS 5.4) — In firmware version MS_2.6.9900 of Columbia Weather MicroServer, a networkdiags.php reflected Cross-site scrip…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High