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.

Score

CVSS 4.0 7.1 High

Status

Analyzed - f23511db-6c3e-4e32-a477-6aa17d310630

Published

2026-08-18

Last modified

2026-10-22

Weaknesses

CWE-20

Affected products

• Tapo C200 Firmware (Tp-link)
• Tapo C200 V5 (Tp-link Systems Inc.)

References

• https://www.tp-link.com/us/support/download/tapo-c200/v5/
• https://www.tp-link.com/en/support/download/tapo-c200/v5/
• https://www.tp-link.com/us/support/faq/5248/