Vulnerability · Published Jan 27, 2026 · Assigned by TPLink

CVE-2026-0919Unauthenticated Denial of Service via Oversized URL in HTTP Parser on TP-Link Tapo C210, C220 & C520WS

High 7.1

In plain English

A high-severity improper input validation in Tapo C210 v3 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 0.6% (higher than 49% of all known vulnerabilities).

Severity (CVSS 4.0)7.1High

Exploit odds (30 days)0.6%top 50.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

The HTTP parser of Tapo C210 v3, C220 v1 and C520WS v2 cameras improperly handles requests containing an excessively long URL path. An invalid‑URL error path continues into cleanup code that assumes allocated buffers exist, leading to a crash and service restart. An unauthenticated attacker can force repeated service crashes or device reboots, causing denial of service.

Affected products (as reported)

Vendor	Product	Versions
TP-Link Systems Inc.	Tapo C220 v1	0 – before 1.4.2 Build 251112
TP-Link Systems Inc.	Tapo C520WS v2	0 – before 1.2.3 Build 251114
TP Link Systems Inc.	Tapo C210 v3	0 – before 1.2.6 Build 260328

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

In plain English

Official description

Affected products (as reported)

References