CVE-2026-0918
TP-Link · published 2026-01-27
Source record Collected from the National Vulnerability Database (NVD)
Description
Description by TPLink via the CVE Program.
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.
Status at the source
- NVD status: Modified
Affected products, as the source lists them
| Vendor | Product | Versions |
|---|---|---|
| TP-Link Systems Inc. | Tapo C220 v1 | 0 – before 1.4.2 Build 251112: affected |
| TP-Link Systems Inc. | Tapo C520WS v2 | 0 – before 1.2.3 Build 251114: affected |
| TP-Link Systems Inc. | Tapo C100 v5 | 0 – before 1.4.3 Build 251128: affected |
Products named in NVD's CPE match criteria (2)
cpe:2.3:o:tp-link:tapo_c220_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:tp-link:tapo_c520ws_firmware:*:*:*:*:*:*:*:*
DeSpy has not checked any unit, hardware revision or firmware. A product missing here is not a statement that it is unaffected.
Scores, as their sources published them
- CVSS 4.0: 7.1 HIGH — as published by TPLink (Secondary)
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1: 7.5 HIGH — as published by NIST (Primary)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - SSVC — CISA's assessment (SSVC 2.0.3, CISA Coordinator): Exploitation: none · Automatable: no · Technical impact: partial
DeSpy does not score records. These are the sources' own values.
Weaknesses
Sources
References the source lists
- https://www.crac-learning.com/post/smart-home-security-research-cve-2026-0918-assigned
- https://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/
Source dates: published 2026-01-27, last changed 2026-06-17. DeSpy's copy of this version is dated 2026-09-28.
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