CVE-2025-66620

HIGH
2026-01-07 [email protected]
8.0
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
CVE Published
Jan 07, 2026 - 21:15 nvd
HIGH 8.0

Tags

Information Disclosure Weather Microserver Firmware

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.

Analysis

An unused webshell in MicroServer allows unlimited login attempts, with sudo rights on certain files and directories. [CVSS 8.0 HIGH]

Technical Context

Affects Weather Microserver Firmware. 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.

Affected Products

Vendor: Columbiaweather. Product: Weather Microserver Firmware.

Remediation

Monitor vendor advisories for a patch.

Priority Score

40
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +40
POC: 0

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CVE-2025-66620 vulnerability details – vuln.today
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