CVE-2025-64305

Firmware-secret disclosure via unencrypted SD card

Published Jan 7, 2026 · Updated Jan 7, 2026

Cleartext storage in Columbia Weather Systems Weather MicroServer before MS_4.1_14142 allows attackers to read firmware secrets from its SD card. During boot, the appliance copies firmware portions containing user and vendor secrets to an external SD card without encrypting them. Access to the card or its contents exposes plaintext secrets that CISA reports can grant portal administration or support firmware modification.

CVSS severity6.5
Medium
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext storage in Columbia Weather Systems Weather MicroServer before MS_4.1_14142 allows attackers to read firmware secrets from its SD card. During boot, the appliance copies firmware portions containing user and vendor secrets to an external SD card without encrypting them. Access to the card or its contents exposes plaintext secrets that CISA reports can grant portal administration or support firmware modification.

The record

CVE
CVE-2025-64305
Published
Jan 7, 2026
Updated
Jan 7, 2026
Vendor
Columbia Weather Systems
Product
Weather MicroServer
Classifications
CWE-313, T1552.001
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 7, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <MS_4.1_14142

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Columbia Weather Systems · Weather MicroServerversion=0 <MS_4.1_14142

Published CVSS scores

6.5CISACVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-313Cleartext Storage in a File or on Disk
T1552.001Unsecured Credentials: Credentials In Files

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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