What is the CVSS score of CVE-2025-63362?

CVE-2025-63362 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.2%.

Is there a public PoC exploit available for CVE-2025-63362?

Yes, a public proof-of-concept exploit is available for CVE-2025-63362. Prioritise patching immediately. EPSS: 0.2%.

How to fix or mitigate CVE-2025-63362?

Within 24 hours: Identify and inventory all Waveshare RS232/485 to WiFi/ETH (B) devices running firmware V3.1.1.0 and isolate them from production networks if possible. Within 7 days: Implement network segmentation to restrict device access, disable remote management features, and apply firewall rules to limit administrative access to known trusted IP ranges only. Within 30 days: Contact Waveshare for patch availability and timeline; evaluate replacement with alternative vendors if patches are unavailable within 60 days, and implement continuous monitoring for unauthorized authentication attempts on remaining devices.

CVE-2025-63362

EUVD-2025-201260 CRITICAL

Unverified Password Change (CWE-620)

2025-12-04 cve@mitre.org

Authentication Bypass

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

EUVD ID Assigned

Mar 15, 2026 - 16:35 euvd

EUVD-2025-201260

Analysis Generated

Mar 15, 2026 - 16:35 vuln.today

PoC Detected

Dec 15, 2025 - 15:37 vuln.today

Public exploit code

CVE Published

Dec 04, 2025 - 19:16 nvd

CRITICAL 9.8

DescriptionCVE.org

Waveshare RS232/485 TO WIFI ETH (B) Serial to Ethernet/Wi-Fi Gateway Firmware V3.1.1.0: HW 4.3.2.1: Webpage V7.04T.07.002880.0301 allows attackers to set the Administrator password and username as blank values, allowing attackers to bypass authentication.

Analysis

Technical ContextAI

An authentication bypass vulnerability allows attackers to circumvent login mechanisms and gain unauthorized access without valid credentials.

RemediationAI

Implement robust authentication mechanisms. Use multi-factor authentication. Review authentication logic for bypass conditions. Remove default credentials.

CVE-2025-63362 vulnerability details – vuln.today

Back

CVE-2025-63362

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

Analysis

Technical ContextAI

RemediationAI

Share

External POC / Exploit Code