CVE-2026-0918
Null Pointer Dereference in Tapo SmartCam HTTP Service on TP-Link Tapo C220 & C520WS
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
The Tapo 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.
| CWE | CWE-476 |
| Vendor | tp-link systems inc. |
| Product | tapo c220 v1 |
| Published | Jan 27, 2026 |
| Last Updated | Mar 16, 2026 |
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Affected Versions
TP-Link Systems Inc. / Tapo C220 v1
0 < 1.4.2 Build 251112
TP-Link Systems Inc. / Tapo C520WS v2
0 < 1.2.3 Build 251114
TP-Link Systems Inc. / Tapo C100 v5
0 < 1.4.3 Build 251128
References
tp-link.com: https://www.tp-link.com/us/support/download/tapo-c220/v1.60/ tp-link.com: https://www.tp-link.com/en/support/download/tapo-c220/v1/ tp-link.com: https://www.tp-link.com/us/support/download/tapo-c520ws/v2/ tp-link.com: https://www.tp-link.com/en/support/download/tapo-c520ws/v2/ tp-link.com: https://www.tp-link.com/us/support/faq/4923/ tp-link.com: https://www.tp-link.com/us/support/download/tapo-c100/v5/ crac-learning.com: https://www.crac-learning.com/post/smart-home-security-research-cve-2026-0918-assigned
Credits
Diogo Almeida @NeWbie Azim Javed & Ayushman Agrawal Hingorani from CRAC Learning