Improper input validation in TP-Link Tapo C200 Firmware
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.002 (13.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 13.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.001
Affected products
Weakness classification (CWE)
References
- f23511db-6c3e-4e32-a477-6aa17d310630 (Product, Release Notes, patch)
- f23511db-6c3e-4e32-a477-6aa17d310630 (Product, Release Notes, patch)
- f23511db-6c3e-4e32-a477-6aa17d310630 (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-15316?
- CVE-2026-15316 is a medium-severity vulnerability in TP-Link Tapo C200 Firmware, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2026-08-18.
- How severe is CVE-2026-15316?
- Medium severity. CVSS v3 base score is 6.5 out of 10.