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.

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
TP-Link Systems Inc. Tapo C200 v5 unaffected
Version Status Constraints
0 affected < V5_1.4.6 Build 260709 Rel.27675n

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.tp-link.com/en/support/download/tapo-c200/v5/ cve-icon cve-icon
https://www.tp-link.com/us/support/download/tapo-c200/v5/ cve-icon cve-icon
https://www.tp-link.com/us/support/faq/5248/ cve-icon cve-icon
History

Tue, 18 Aug 2026 21:45:00 +0000

Type Values Removed Values Added
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.
Title Denial-of-Service via Oversized Encrypted Credential Input in TP-Link Tapo C200
Weaknesses CWE-20
References
Metrics cvssV4_0

{'score': 7.1, '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: TPLink

Published:

Updated: 2026-08-18T21:25:11.118Z

Reserved: 2026-07-09T17:55:11.713Z

Link: CVE-2026-15316

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-18T22:16:49.367

Modified: 2026-08-18T22:16:49.367

Link: CVE-2026-15316

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-18T22:30:04Z

Weaknesses