CVE-2026-78578 Missing authorization in Tapo C120 v1
Unauthenticated attackers can reconfigure Wi-Fi settings on TP-Link Tapo cameras, causing disconnection and denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-78578?
CVE-2026-78578 is a high-severity missing authorization vulnerability in TP-Link Systems Inc. Tapo C120 v1, published on 1 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Tapo C120 v1 and C200 v5 do not enforce authentication for do method HTTPS onboarding connect actions after initial setup. An unauthenticated adjacent attacker can submit unauthorized wireless configuration parameters, causing the camera to attempt connection to a different network.
Successful exploitation disconnects the camera from its intended wireless network, making it unreachable on its management address, resulting in a denial-of-service condition.
Weakness: CWE-306
Which versions are affected by CVE-2026-78578?
How do I fix CVE-2026-78578?
No fix has been published for CVE-2026-78578 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-78578 being exploited?
There is no known exploitation of CVE-2026-78578 in the wild and no public exploit code.
Sources
Also known as GHSA-5hx8-fmw3-r64v.