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TI-2026-12890 Aliases CVE-2026-15316GHSA-5fvx-mqqx-vrm4

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

Priority LOW 31CWE-20Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00334 26th percentileScored 2026-11-07
Fix Fixed Tapo C200 v5 (TP-Link Systems Inc.): V5_1.4.6 Build 260709 Rel.27675n

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
TP-LinkTapo C200 v5before V5_1.4.6 Build 260709 Rel.27675nV5_1.4.6 Build 260709 Rel.27675nPatch availableCNA
  • Tapo C200 v5 VendorTP-Link Affected before V5_1.4.6 Build 260709 Rel.27675n Fixed in V5_1.4.6 Build 260709 Rel.27675n Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:tp-link:tapo_c200_firmware:*:*:*:*:*:*:*:*before 1.4.6VulnerableTP-Link
cpe:2.3:h:tp-link:tapo_c200:5.0:*:*:*:*:*:*:*5.0Running onTP-Link
  • cpe:2.3:o:tp-link:tapo_c200_firmware:*:*:*:*:*:*:*:* Versions before 1.4.6 Vulnerable ·TP-Link
  • cpe:2.3:h:tp-link:tapo_c200:5.0:*:*:*:*:*:*:* Versions 5.0 Running on ·TP-Link

Remediation

  • Fix · CNA Tapo C200 v5 (TP-Link Systems Inc.) Fixed in V5_1.4.6 Build 260709 Rel.27675n

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    TP-Link Systems Tapo C200 v5 — tp-link.com/us/support/faq/5248

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-12889 Unauthenticated Administrative Authentication Bypass via device_confirm Replay in TP-Link Tapo C120 and C200Priority MEDIUM 40
    Show all 2 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-15316
  2. 2026-10-03 Alias added: GHSA-5fvx-mqqx-vrm4

References

Patch 2

Advisory 1

  • TI-2021-02932 TP-LINK Tapo C200 remote code execution vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2023-27043 Insecure Permissiosn vulnerability in TP Link TC70 and C200 WIFI Camera v.3 firmware… CVSS 3.1MEDIUM 4.6
  • TI-2023-11937 The AES Key-IV pair used by the TP-Link TAPO C200 camera V3 (EU) on firmware version… CVSS 3.1MEDIUM 4.6
  • TI-2026-12889 Unauthenticated Administrative Authentication Bypass via device_confirm Replay in TP-Link Tapo C120 and C200 CVSS 4.0HIGH 8.7
  • TI-2025-13063 Unauthenticated Access to connectAP API Endpoint on Tapo C100, C200 & C425 CVSS 4.0HIGH 8.7
  • TI-2025-07378 Remote Code Execution via Stack-based Buffer Overflow in ONVIF SOAP Parser in TP-Link Tapo C200 and C520WS CVSS 4.0HIGH 8.7
See all 10 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences