CVE-2026-104944: Unauthenticated TDP Function Pointer Dispatch Denial of Service in TP-Link Tapo C500

Severity: high (CVSS 7.1 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-06 · updated 2026-10-07
Weakness: CWE-823

Description

TP-Link Tapo C500 v2.0 contains an out-of-bounds function-pointer dispatch in its TDP (TP-Link Device Protocol) daemon. A single unauthenticated UDP datagram can cause an invalid indirect call, crashing the main service and resulting in a denial-of-service condition. Successful exploitation may allow an unauthenticated attacker with network access to the affected UDP service to repeatedly crash the TDP daemon, disrupting normal device operation and availability. No authentication, session establishment, or pairing is required to trigger the condition.

Affected products

TP-Link Systems Inc. Tapo C500 v2.0: before 1.3.5 Build 260810 — fixed in 1.3.5 Build 260810

How to fix

Upgrade to a fixed version: TP-Link Systems Inc. Tapo C500 v2.0 1.3.5 Build 260810. Check the vendor advisory for mitigations.

References

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