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.
History

Fri, 04 Sep 2026 17:45:00 +0000

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'}


Thu, 27 Aug 2026 18:00:00 +0000

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

Fri, 21 Aug 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Fri, 21 Aug 2026 13:00:00 +0000

Type Values Removed Values Added
First Time appeared Tp-link
Tp-link tapo C200 V5
Vendors & Products Tp-link
Tp-link tapo C200 V5

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

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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: TPLink

Published: 2026-08-18T21:24:59.428Z

Updated: 2026-08-27T23:08:42.298Z

Reserved: 2026-07-09T17:55:09.825Z

Link: CVE-2026-15315

cve-icon Vulnrichment

Updated: 2026-08-20T15:27:06.380Z

cve-icon NVD

Status : Analyzed

Published: 2026-08-18T22:16:49.207

Modified: 2026-09-04T17:39:06.830

Link: CVE-2026-15315

cve-icon Redhat

No data.