CVE-2026-0919
Unauthenticated Denial of Service via Oversized URL in HTTP Parser on TP-Link Tapo C210, C220 & C520WS
- State
- Published
- Severity
- 7.1 High
- Published
- Jan 27, 2026
- Updated
- Apr 29, 2026
- Reserved
- Jan 13, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.1 High | 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 | TPLink |
Weaknesses
- CWE-20 Improper Input Validation
Affected Products
| Product | Versions |
|---|---|
Tapo C220 v1TP-Link Systems Inc. |
|
Tapo C520WS v2TP-Link Systems Inc. |
|
Tapo C210 v3TP Link Systems Inc. |
|
References
- https://www.tp-link.com/us/support/download/tapo-c220/v1.60/patch
- https://www.tp-link.com/en/support/download/tapo-c220/v1/patch
- https://www.tp-link.com/us/support/download/tapo-c520ws/v2/patch
- https://www.tp-link.com/en/support/download/tapo-c520ws/v2/patch
- https://www.tp-link.com/us/support/faq/4923/vendor-advisory
- https://www.tp-link.com/us/support/download/tapo-c210/v3/patch
- https://www.tp-link.com/en/support/download/tapo-c210/v3/patch
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