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OpenAdvisories
High · 7.1 CVE-2026-15316 EUVD-2026-62194GHSA-5fvx-mqqx-vrm4

Denial-of-Service via Oversized Encrypted Credential Input in TP-Link Tapo C200

Published Aug 18, 2026 · Updated Aug 20, 2026 · Assigned by TPLink

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

VendorProductAffectedFixed
TP-Link Systems Tapo C200 v5 < V5_1.4.6 Build 260709 Rel.27675n V5_1.4.6 Build 260709 Rel.27675n

References