Vulnerability · Published Jan 27, 2026 · Assigned by TPLink
CVE-2026-0918Null Pointer Dereference in Tapo SmartCam HTTP Service on TP-Link Tapo C220 & C520WS
High 7.1
In plain English
A high-severity null pointer dereference in Tapo C100 v5 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 0.7% (higher than 54% of all known vulnerabilities).
Official description
The Tapo C100 v5, C220 v1 and C520WS v2 cameras’ HTTP service does not safely handle POST requests containing an excessively large Content-Length header. The resulting failed memory allocation triggers a NULL pointer dereference, causing the main service process to crash. An unauthenticated attacker can repeatedly crash the service, causing temporary denial of service. The device restarts automatically, and repeated requests can keep it unavailable.
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 C100 v5 | 0 – before 1.4.3 Build 251128 |
Weakness: CWE-476 · 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/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-c100/v5/ patch
- https://www.crac-learning.com/post/smart-home-security-research-cve-2026-0918-assigned third-party-advisory