CVE-2025-64305 Columbia Weather Systems MicroServer Cleartext Storage in a File or on Disk
Attackers can extract plaintext secrets from an SD card to modify firmware or gain admin access to the web portal.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-64305?
CVE-2025-64305 is a high-severity vulnerability in Columbia Weather Systems MicroServer, published on 7 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-313
Which versions are affected by CVE-2025-64305?
How do I fix CVE-2025-64305?
No fix has been published for CVE-2025-64305 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-64305 being exploited?
There is no known exploitation of CVE-2025-64305 in the wild and no public exploit code.
Sources
Also known as GHSA-9crg-j5q8-hwv3.