CVE-2026-78578Unauthenticated do Method Onboarding Connect Allows Wi‑Fi Reconfiguration Denial of Service Vulnerability in TP-Link Tapo C120 & C200
Updated under an hour ago ()
Does this affect you?
It affects TP-Link Systems Inc. Tapo C200 v5 and 1 other product. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.25%, higher than 15% of scored CVEs.
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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.
- CVSS
- 7.1 HIGH (v4.0, CNA)CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- Weakness (CWE)
- CWE-306
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.25% (percentile 15)
- Assigned by
- TPLink
- NVD analysis
- Deferred
- Record last updated
- Oct 1, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
TP-Link Systems Inc. Tapo C200 v5 tp_link_systems:tapo_c200_v5 (from the name) | before V5_1.4.6 Build 260709 Rel.27675n | CNA record |
TP-Link Systems Inc. Tapo C120 v1 tp_link_systems:tapo_c120_v1 (from the name) | before V1_1.9.4 Build 260813 Rel.79754n | CNA record |
References
- https://www.tp-link.com/us/support/download/tapo-c200/v5/#Firmware-Release-Notespatch
- https://www.tp-link.com/en/support/download/tapo-c200/v5/#Firmware-Release-Notespatch
- https://www.tp-link.com/us/support/download/tapo-c120/v1.26/#Firmware-Release-Notespatch
- https://www.tp-link.com/en/support/download/tapo-c120/v1.26/#Firmware-Release-Notespatch
- https://www.tp-link.com/us/support/faq/5321/vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.