CVE-2025-66620

HIGH

8.0

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.

CVE Details

CVSS v3.1 Score8.0

SeverityHIGH

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

Attack VectorADJACENT_NETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published1/7/2026

Last Modified1/22/2026

Sourcenvd

Honeypot Sightings0

Affected Products

columbiaweather:weather_microservercolumbiaweather:weather_microserver_firmware

Weaknesses (CWE)

CWE-553

References

https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-006-01.json(ics-cert@hq.dhs.gov)

https://www.cisa.gov/news-events/ics-advisories/icsa-26-006-01(ics-cert@hq.dhs.gov)

IOC Correlations

No correlations recorded

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