Zyxel EX3510-B0 up to 5.17(ABUP.15.1)C0 UPnP SOAP Request os command injection

Summaryinfo

A vulnerability was found in Zyxel EX3510-B0 up to 5.17(ABUP.15.1)C0. It has been rated as critical. Affected is an unknown function of the component UPnP SOAP Request Handler. Performing a manipulation results in os command injection. This vulnerability is known as CVE-2025-13942. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability classified as very critical has been found in Zyxel EX3510-B0 up to 5.17(ABUP.15.1)C0. This affects an unknown function of the component UPnP SOAP Request Handler. The manipulation with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A command injection vulnerability in the UPnP function of the Zyxel EX3510-B0 firmware versions through 5.17(ABUP.15.1)C0 could allow a remote attacker to execute operating system (OS) commands on an affected device by sending specially crafted UPnP SOAP requests.

This vulnerability is uniquely identified as CVE-2025-13942 since 12/03/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 02/24/2026). MITRE ATT&CK project uses the attack technique T1202 for this issue.

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

• Zyxel

Name

• EX3510-B0

Version

• 5.17(ABUP.15.1)C0

License

• commercial

Website

• Vendor: https://www.zyxel.com/

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