Null Pointer Dereference in Tapo SmartCam HTTP Service on TP-Link Tapo C220 & C520WS
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.1epss 0.7%
exploitation probability
0.7%top 49% of all CVEs
observed exploitation
nono source reports it
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.
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
Affected products
TP-Link Systems Inc. · Tapo C100 v5TP-Link Systems Inc. · Tapo C220 v1TP-Link Systems Inc. · Tapo C520WS v2References
https://www.crac-learning.com/post/smart-home-security-research-cve-2026-0918-assignedhttps://www.tp-link.com/en/support/download/tapo-c220/v1/https://www.tp-link.com/en/support/download/tapo-c520ws/v2/https://www.tp-link.com/us/support/download/tapo-c100/v5/https://www.tp-link.com/us/support/download/tapo-c220/v1.60/https://www.tp-link.com/us/support/download/tapo-c520ws/v2/https://www.tp-link.com/us/support/faq/4923/