Tenda W30E V2 up to 16.01.0.19(5037) Response Header escape output

Summaryinfo

A vulnerability marked as problematic has been reported in Tenda W30E V2 up to 16.01.0.19(5037). The impacted element is an unknown function of the component Response Header Handler. The manipulation leads to escape output. This vulnerability is traded as CVE-2026-24439. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Tenda W30E V2 up to 16.01.0.19(5037). It has been rated as problematic. This issue affects an unknown code of the component Response Header Handler. The manipulation with an unknown input leads to a escape output vulnerability. Using CWE to declare the problem leads to CWE-116. The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Shenzhen Tenda W30E V2 firmware versions up to and including V16.01.0.19(5037) fail to include the X-Content-Type-Options: nosniff response header on web management interfaces. As a result, browsers that perform MIME sniffing may incorrectly interpret attacker-influenced responses as executable script.

The weakness was shared by Kazuma Matsumoto. It is possible to read the advisory at tendacn.com. The identification of this vulnerability is CVE-2026-24439 since 01/22/2026. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/29/2026).

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-2026-4674). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Router Operating System

Vendor

• Tenda

Name

• W30E V2

Version

• 16.01.0.19(5037)

License

• commercial

Website

• Vendor: https://www.tenda.com.cn/

CPE 2.3info

• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

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

Discussion