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HIGHCVE-2026-0918Published Modified CNA TPLink

CVE-2026-0918: Null Pointer Dereference in Tapo SmartCam HTTP Service on TP-Link Tapo C220 & C520WS

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.

Metrics

CVSS v4.0
7.1
Severity
HIGH
Fixed in
1.2.3 Build 251114
Affected Products
3

Fix available

1.2.3 Build 2511141.4.2 Build 2511121.4.3 Build 251128
Patch commits
Affected packages
  • TP-Link Systems Inc. / Tapo C220 v1
    < 1.4.2 Build 251112 (from 0)
  • TP-Link Systems Inc. / Tapo C520WS v2
    < 1.2.3 Build 251114 (from 0)
  • TP-Link Systems Inc. / Tapo C100 v5
    < 1.4.3 Build 251128 (from 0)
CVSS 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