Mercusys MW305R up to 3.30 TLS certificate validation

Summaryinfo

A vulnerability was found in Mercusys MW305R up to 3.30 and classified as critical. The affected element is an unknown function of the component TLS Handler. Executing a manipulation can lead to certificate validation. The identification of this vulnerability is CVE-2025-56463. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical was found in Mercusys MW305R up to 3.30. This vulnerability affects an unknown code of the component TLS Handler. The manipulation with an unknown input leads to a certificate validation vulnerability. The CWE definition for the vulnerability is CWE-295. The product does not validate, or incorrectly validates, a certificate. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Mercusys MW305R 3.30 and below is has a Transport Layer Security (TLS) certificate private key disclosure.

The advisory is available at packetstormsecurity.com. This vulnerability was named CVE-2025-56463 since 08/17/2025. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/26/2025). This vulnerability is assigned to T1587.003 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Mercusys

Name

• MW305R

Version

• 3.0
• 3.1
• 3.2
• 3.3
• 3.4
• 3.5
• 3.6
• 3.7
• 3.8
• 3.9
• 3.10
• 3.11
• 3.12
• 3.13
• 3.14
• 3.15
• 3.16
• 3.17
• 3.18
• 3.19
• 3.20
• 3.21
• 3.22
• 3.23
• 3.24
• 3.25
• 3.26
• 3.27
• 3.28
• 3.29
• 3.30

CPE 2.3info

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CPE 2.2info

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