CVE-2026-104945: Authenticated ONVIF PTZ Out-of-Bounds Stack Write Denial of Service in TP-Link Tapo C500

Severity: medium (CVSS 6.8 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% 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-121

Description

TP-Link Tapo C500 v2.0 contains an out-of-bounds stack write vulnerability in its ONVIF PTZ SOAP handlers. An authenticated ONVIF client can submit an excessive number of preset-related elements, causing writes beyond the bounds of fixed-size stack arrays and resulting in a crash of the affected service. Successful exploitation may allow an authenticated attacker to cause the affected service to crash, resulting in a denial-of-service condition. Repeated exploitation may repeatedly disrupt camera management and PTZ-related functionality until the service recovers or restarts.

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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