What’s Vulnerable › Vulnerabilities

CVE-2025-64305: Columbia Weather Systems MicroServer Cleartext Storage in a File or on Disk

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-01-07 · updated 2026-10-07
• Weakness: CWE-313

Description

MicroServer copies parts of the system firmware to an unencrypted external SD card on boot, which contains user and vendor secrets. An attacker can utilize these plaintext secrets to modify the vendor firmware, or gain admin access to the web portal.

Affected products

• Columbia Weather Systems MicroServer: before MS_4.1_14142 — fixed in MS_4.1_14142

How to fix

Upgrade to a fixed version: Columbia Weather Systems MicroServer MS_4.1_14142. Check the vendor advisory for mitigations.

References

• https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-006-01.json
• https://www.cisa.gov/news-events/ics-advisories/icsa-26-006-01

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