CVE-2026-15315
TP-Link
- Published
- 18 August 2026
- Last modified
- 4 September 2026
- CVSS
- 8.7 v4.0
- Severity
- high
- EPSS
- 0.3% (20th pct)
- CISA KEV
- Not listed
- NVD status
- Analyzed
- Weaknesses
- CWE-287
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
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.
Exploitation
Not listed in the CISA Known Exploited Vulnerabilities catalogue as of 2026.09.04. That is an absence of confirmed public exploitation, not evidence that exploitation has not occurred. EPSS models a 0.3% probability of exploitation activity in the next 30 days.
Affected products
| Product | Vendor | Type | Versions named |
|---|---|---|---|
| Tapo C120 | TP-Link | unknown | < 1.9.3 |
| Tapo C200 | TP-Link | unknown | 1.0.12, 1.0.13, 1.0.17, 1.0.5 +24 |
References
Vendor advisory and patch
- https://www.tp-link.com/en/support/download/tapo-c120/v1.26/#Firmware-Release-Notes
- https://www.tp-link.com/en/support/download/tapo-c200/v5/
- https://www.tp-link.com/us/support/download/tapo-c120/v1.26/#Firmware-Release-Notes
- https://www.tp-link.com/us/support/download/tapo-c200/v5/
Record assembled from NVD, CISA KEV 2026.09.04 and FIRST EPSS 2026-09-04. Affected products are those NVD's CPE configuration names that fall inside this site's scope; a CVE may affect products outside it.