Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Tp-Link | Tapo C120 Firmware | < 1.9.3 |
| Tp-Link | Tapo C120 | - |
| Tp-Link | Tapo C200 Firmware | < 1.4.6 |
| Tp-Link | Tapo C200 | 5.0 |
Related Weaknesses (CWE)
References
- https://www.tp-link.com/en/support/download/tapo-c120/v1.26/#Firmware-Release-NoRelease NotesProduct
- https://www.tp-link.com/en/support/download/tapo-c200/v5/ProductRelease Notes
- https://www.tp-link.com/us/support/download/tapo-c120/v1.26/#Firmware-Release-NoRelease NotesProduct
- https://www.tp-link.com/us/support/download/tapo-c200/v5/ProductRelease Notes
- https://www.tp-link.com/us/support/faq/5248/Vendor AdvisoryPatch
FAQ
What is CVE-2026-15315?
CVE-2026-15315 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 para...
How severe is CVE-2026-15315?
CVE-2026-15315 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-15315?
Check the references section above for vendor advisories and patch information. Affected products include: Tp-Link Tapo C120 Firmware, Tp-Link Tapo C120, Tp-Link Tapo C200 Firmware, Tp-Link Tapo C200.