Vulnerability Intelligence Report
Denial-of-Service via Oversized Encrypted Credential Input in TP-Link Tapo C200
CVE-2026-15316
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.
No Active Exploit Signals
CVSS Base Score
7.1
HIGH
EPSS Probability:0.19%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-20 ↗CWE-20 Improper input validation
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| TP-Link Systems Inc. | Tapo C200 v5 | 0 < V5_1.4.6 Build 260709 Rel.27675n (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.188%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | TP-Link Systems Inc. · Vendor · USA |
| Reserved | 2026-07-09T17:55:11 |
| Published | 2026-08-18T21:25:11 |
| Last Updated | 2026-08-20T15:36:48 |
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