CVE-2026-1871 Authenticated Stack-based Buffer Overflow in RTSP Authentication of Tapo C200

High 7.1 Published 2 Jun 2026 Updated 2 Jun 2026

An authenticated attacker can cause a denial of service on TP-Link Tapo C200 cameras by triggering a stack-based buffer overflow in RTSP authentication.

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-2026-1871?

CVE-2026-1871 is a high-severity memory corruption vulnerability in TP-Link Systems Inc. Tapo C200 v5, published on 2 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

TP-Link Tapo C200 v5 contains a stack-based buffer overflow flaw in RTSP authentication handling due to improper validation of Authorization header field lengths, which can be triggered by a crafted authentication request.

Successful exploitation causes the affected RTSP core service process to crash and triggers an automatic system reboot, resulting in a denial of service (DoS) condition. This prevents legitimate users from accessing the camera’s live video stream or management interface until the service restarts.

Weakness: CWE-121

Which versions are affected by CVE-2026-1871?

It affects 1 product.

Products include Tp-Link Tapo C200 Firmware.

How do I fix CVE-2026-1871?

No fix has been published for CVE-2026-1871 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-1871 being exploited?

There is no known exploitation of CVE-2026-1871 in the wild and no public exploit code.

Sources

Also known as GHSA-92jw-rf4g-rwr2.