CVE-2026-34124 Denial of Service via Path Expansion Overflow in HTTP Service in TP-Link Tapo C520WS
An attacker on the adjacent network can cause a device reboot via buffer overflow in HTTP path parsing, affecting TP-Link Tapo C520WS cameras.
- 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-2026-34124?
CVE-2026-34124 is a high-severity memory corruption vulnerability in TP-Link Systems Inc. Tapo C520WS v2.6, published on 2 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A denial-of-service vulnerability was identified in TP-Link Tapo C520WS v2.6 within the HTTP request path parsing logic. The implementation enforces length restrictions on the raw request path but does not account for path expansion performed during normalization. An attacker on the adjacent network may send a crafted HTTP request to cause buffer overflow and memory corruption, leading to system interruption or device reboot.
Weakness: CWE-120
Which versions are affected by CVE-2026-34124?
It affects 1 product.
Products include Tp-Link Tapo C520ws Firmware.
How do I fix CVE-2026-34124?
No fix has been published for CVE-2026-34124 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-2026-34124 being exploited?
There is no known exploitation of CVE-2026-34124 in the wild and no public exploit code.
Other vulnerabilities in TP-Link Systems Inc. Tapo C520WS v2.6
- CVE-2026-34121 Authentication Bypass in DS Configuration Service via HTTP Request Parsing Differential of TP-Link Tapo C520WS
- CVE-2026-8714 Denial-of-Service Vulnerability in RTSP Input Handling on TP-Link's Tapo C520WS
- CVE-2026-34118 Heap-based Buffer Overflow Vulnerability Leading to Denial-of-Service in TP-Link Tapo C100, C101, C210 & C520WS
- CVE-2026-34119 Heap-based Buffer Overflow Vulnerability Leading to Denial-of-Service in TP-Link Tapo C520WS
- CVE-2026-34120 Heap-based Buffer Overflow Vulnerability Leading to Denial-of-Service in TP-Link Tapo C520WS
Sources
Also known as GHSA-9mqg-m9h5-3xhj.