TP-Link TL-WR845N v4 JavaScript eval injection

Summaryinfo

A vulnerability classified as critical has been found in TP-Link Archer MR200 v5.2, Archer C20 v6, TL-WR850N v3 and TL-WR845N v4. Affected by this vulnerability is the function JavaScript. Performing a manipulation results in eval injection. This vulnerability was named CVE-2025-15551. The attack needs to be approached within the local network. There is no available exploit.

Detailsinfo

A vulnerability was found in TP-Link Archer MR200 v5.2, Archer C20 v6, TL-WR850N v3 and TL-WR845N v4 (version now known). It has been classified as critical. This affects the function JavaScript. The manipulation with an unknown input leads to a eval injection vulnerability. CWE is classifying the issue as CWE-95. The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes code syntax before using the input in a dynamic evaluation call (e.g. "eval"). This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The response coming from TP-Link Archer MR200 v5.2, C20 v6, TL-WR850N v3, and TL-WR845N v4 for any request is getting executed by the JavaScript function like eval directly without any check. Attackers can exploit this vulnerability via a Man-in-the-Middle (MitM) attack to execute JavaScript code on the router's admin web portal without the user's permission or knowledge.

The weakness was presented by Swaroop Dora, Deven Lunkad, Ashutosh Kumar and And S. Venkatesan. The advisory is shared at tp-link.com. This vulnerability is uniquely identified as CVE-2025-15551 since 01/30/2026. The exploitability is told to be easy. Access to the local network is required for this attack to succeed. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/12/2026).

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-2025-206826). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Router Operating System

Vendor

• TP-Link

Name

• Archer C20 v6
• Archer MR200 v5.2
• TL-WR845N v4
• TL-WR850N v3

License

• commercial

Website

• Vendor: https://www.tp-link.com/

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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