What’s Vulnerable › Vulnerabilities

CVE-2026-1315: Unauthenticated Denial of Service via Firmware Update Endpoint on TP-Link Tapo C220 & C520WS

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-01-27 · updated 2026-06-17
• Weakness: CWE-20

Description

By sending crafted files to the firmware update endpoint of Tapo C220 v1 and C520WS v2, the device terminates core system services before verifying authentication or firmware integrity. An unauthenticated attacker can trigger a persistent denial of service, requiring a manual reboot or application initiated restart to restore normal device operation.

Affected products

• TP-Link Tapo C220 Firmware: before 1.4.2 — fixed in 1.4.2
• TP-Link Systems Inc. Tapo C520WS v2: before 1.2.3 — fixed in 1.2.3

How to fix

Upgrade to a fixed version: TP-Link Tapo C220 Firmware 1.4.2; TP-Link Systems Inc. Tapo C520WS v2 1.2.3. Check the vendor advisory for mitigations.

References

• https://www.tp-link.com/en/support/download/tapo-c220/v1/
• https://www.tp-link.com/en/support/download/tapo-c520ws/v2/
• https://www.tp-link.com/us/support/download/tapo-c220/v1.60/
• https://www.tp-link.com/us/support/download/tapo-c520ws/v2/
• https://www.tp-link.com/us/support/faq/4923/

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