TOTOLINK A950RG 4.1.2cu.5204_B20210112 global.so setDeviceName deviceMac command injection

Summaryinfo

A vulnerability, which was classified as critical, has been found in TOTOLINK A950RG 4.1.2cu.5204_B20210112. This affects the function setDeviceName in the library /lib/cste_modules/global.so. This manipulation of the argument deviceMac causes command injection. This vulnerability is registered as CVE-2025-45800. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability classified as critical was found in TOTOLINK A950RG 4.1.2cu.5204_B20210112. Affected by this vulnerability is the function setDeviceName in the library /lib/cste_modules/global.so. The manipulation of the argument deviceMac with an unknown input leads to a command injection vulnerability. The CWE definition for the vulnerability is CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

TOTOLINK A950RG V4.1.2cu.5204_B20210112 contains a command execution vulnerability in the setDeviceName interface of the /lib/cste_modules/global.so library, specifically in the processing of the deviceMac parameter.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2025-45800 since 04/22/2025. The exploitation appears to be easy. The attack can be launched remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/13/2025). The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

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

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-13127). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• TOTOLINK

Name

• A950RG

Version

• 4.1.2cu.5204_B20210112

License

• commercial

Website

• Vendor: https://www.totolink.net/

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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