Statement on the denial-of-service vulnerability due to the buffer overflow on TL-WR841N (CVE-2025-53711, CVE-2025-53712, CVE-2025-53713, CVE-2025-53714, CVE-2025-53715), TL-WR842ND (CVE-2025-53711) and TL-WR949N (CVE-2025-53711)

Important Information:

These devices have reached end-of-life (EOL); therefore, please review the ‘Recommendation(s)’ section carefully.

Vulnerability Description:

This vulnerability in TL-WR841N v11, TL-WR842ND v2 and TL-WR949N v3 may lead to buffer overflow to cause a crash of the web service and result in a denial-of-service (DoS) condition. The attack may be launched remotely. This vulnerability only affects products that are no longer supported by the maintainer.

Impact:

The HTTP service crashes and can be restored after the reboot on TL-WR841N v11, TL-WR842ND v2 and TLWR949N v3.

CVE-2025-53711, CVE-2025-53712, CVE-2025-53713, CVE-2025-53714, and CVE-2025-53715 all have the same CVSS v4.0 score below.

CVSS v4.0 Score: 6.9 / Medium

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Affected Products/Versions and Fixes:

Recommendation(s):

We strongly recommended that users with the affected device(s) take the following action(s):

1. Upgrade the device to one of our supported models to be able to receive automatic updates for ongoing protection.

Disclaimer:

If you do not take the recommended action(s) stated above, this vulnerability concern will remain. TP-Link cannot bear any responsibility for the consequences that could have been avoided by following the recommended action(s) in this statement.