Vulnerability · Published Aug 18, 2026 · Assigned by TPLink
CVE-2026-15316Denial-of-Service via Oversized Encrypted Credential Input in TP-Link Tapo C200
High 7.1
In plain English
A high-severity improper input validation in Tapo C200 v5 from TP-Link Systems Inc.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities).
Official description
An improper input validation vulnerability in the configuration service for processing encrypted credential data has been identified in Tapo C200 v5. An attacker can send oversized crypted ciphertext values that may trigger exception handling failures, due to insufficient validation, causing the affected device to crash or restart. Successful exploitation may temporarily disrupt HTTPS management and monitoring functionality, resulting in a denial-of-service (DoS) condition until the service recovers.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| TP-Link Systems Inc. | Tapo C200 v5 | 0 – before V5_1.4.6 Build 260709 Rel.27675n |
Weakness: CWE-20 · 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