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
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
TP-Link Systems Inc. Tapo C220 v1
Default version status: unaffected
0 to < 1.4.2 Build 251112affected
TP-Link Systems Inc. Tapo C520WS v2
Default version status: unaffected
0 to < 1.2.3 Build 251114affected
TP-Link Systems Inc. Tapo C100 v5
Default version status: unaffected
0 to < 1.4.3 Build 251128affected
References
- https://www.tp-link.com/us/support/download/tapo-c220/v1.60/ ↗
- https://www.tp-link.com/en/support/download/tapo-c220/v1/ ↗
- https://www.tp-link.com/us/support/download/tapo-c520ws/v2/ ↗
- https://www.tp-link.com/en/support/download/tapo-c520ws/v2/ ↗
- https://www.tp-link.com/us/support/faq/4923/ ↗
- https://www.tp-link.com/us/support/download/tapo-c100/v5/ ↗
- https://www.crac-learning.com/post/smart-home-security-research-cve-2026-0918-assigned ↗