Vulnerability · Published Mar 23, 2026 · Assigned by TPLink

CVE-2025-15606Denial of Service (DoS) in HTTPD Input Handling on TP-Link TD-W8961N

High 7.1

In plain English

A high-severity improper input validation in TD-W8961N v4.0 from TP-Link Systems Inc.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities).

Severity (CVSS 4.0)7.1High

Exploit odds (30 days)0.3%top 76.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A Denial-of-Service (DoS) vulnerability in the httpd component of TP-Link's TD-W8961N v4.0 due to improper input sanitization, allows crafted requests to trigger a processing error that causes the httpd service to crash. Successful exploitation may allow the attacker to cause service interruption, resulting in a DoS condition.

Affected products (as reported)

Vendor	Product	Versions
TP-Link Systems Inc.	TD-W8961N v4.0	0 – before V4_250925

Weakness: CWE-20 · Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

References

https://www.tp-link.com/en/support/download/td-w8961n/v4/#Firmware patch
https://www.tp-link.com/us/support/faq/5028/ vendor-advisory