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.
Affected products
tp-link: tapo c120 firmware; tp-link: tapo c120; tp-link: tapo c200 firmware; tp-link: tapo c200
References5
- www.tp-link.com/us/support/faq/5248/ Vendor AdvisoryPatch
- www.tp-link.com/en/support/download/tapo-c120/v1.26/#Firmware-R… Release NotesProduct
- www.tp-link.com/en/support/download/tapo-c200/v5/ ProductRelease Notes
- www.tp-link.com/us/support/download/tapo-c120/v1.26/#Firmware-R… Release NotesProduct
- www.tp-link.com/us/support/download/tapo-c200/v5/ ProductRelease Notes
Metrics
- CVSS 3.1
-
8.8
HIGH
Score source: NVD
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 4.0
-
8.7
HIGH
Score source: CNA
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 0% percentile: 40 · as of 10 November 2026
- CWE
- CWE-287
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