CVE-2026-15315

Unauthenticated Administrative Authentication Bypass via device_confirm Replay in TP-Link Tapo C120 and C200

Published Aug 18, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Description
Tapo C120 v1 and C200 v5
contain an improper authentication vulnerability within the login
authentication verification module. An attacker on the local network can
exploit weaknesses in challenge parameter validation to bypass normal
authentication controls and obtain administrative session tokens.









Successful
exploitation may allow an attacker to subsequently execute privileged
management actions, enable unauthorized administrative access and temporary
disruption of device services, resulting in a denial-of-service (DoS)
condition.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Tp-link tapo C120
Tp-link tapo C120 Firmware
Tp-link tapo C200
Tp-link tapo C200 Firmware
CPEs cpe:2.3:h:tp-link:tapo_c120:-:*:*:*:*:*:*:*
cpe:2.3:h:tp-link:tapo_c200:5.0:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c120_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:tp-link:tapo_c200_firmware:*:*:*:*:*:*:*:*
Vendors & Products Tp-link tapo C120
Tp-link tapo C120 Firmware
Tp-link tapo C200
Tp-link tapo C200 Firmware
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Type Values Removed Values Added
Description Tapo C200 v5 contains an improper authentication vulnerability within the login authentication verification module. An attacker on the local network can exploit weaknesses in challenge parameter validation to bypass normal authentication controls and obtain administrative session tokens. Successful exploitation may allow an attacker to subsequently execute privileged management actions, enable unauthorized administrative access and temporary disruption of device services, resulting in a denial-of-service (DoS) condition. Tapo C120 v1 and C200 v5 contain an improper authentication vulnerability within the login authentication verification module. An attacker on the local network can exploit weaknesses in challenge parameter validation to bypass normal authentication controls and obtain administrative session tokens. Successful exploitation may allow an attacker to subsequently execute privileged management actions, enable unauthorized administrative access and temporary disruption of device services, resulting in a denial-of-service (DoS) condition.
Title Unauthenticated Administrative Authentication Bypass via device_confirm Replay in TP-Link Tapo C200 Unauthenticated Administrative Authentication Bypass via device_confirm Replay in TP-Link Tapo C120 and C200
References
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Tp-link
Tp-link tapo C200 V5
Vendors & Products Tp-link
Tp-link tapo C200 V5
Type Values Removed Values Added
Description Tapo C200 v5 contains an improper authentication vulnerability within the login authentication verification module. An attacker on the local network can exploit weaknesses in challenge parameter validation to bypass normal authentication controls and obtain administrative session tokens. Successful exploitation may allow an attacker to subsequently execute privileged management actions, enable unauthorized administrative access and temporary disruption of device services, resulting in a denial-of-service (DoS) condition.
Title Unauthenticated Administrative Authentication Bypass via device_confirm Replay in TP-Link Tapo C200
Weaknesses CWE-287
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
TPLink
Published
Updated
Aug 27, 2026, 11:08 PM
Reserved
Jul 9, 2026, 5:55 PM
Status
Analyzed
Published
Aug 18, 2026, 10:16 PM
Modified
Nov 11, 2026, 8:10 PM