CVE-2026-6241 Authenticated Format String Vulnerability in ONVIF AddScopes Method on TP-Link Tapo C520WS
An authenticated attacker can cause a denial of service on TP-Link Tapo C520WS cameras by injecting format specifiers into ONVIF scope parameters.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-6241?
CVE-2026-6241 is a medium-severity vulnerability in TP-Link Systems Inc. Tapo C520WS v2, published on 5 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An authenticated format string vulnerability is present in the ONVIF AddScopes in Tapo C520WS v2, where user-controlled input is improperly passed to formatting functions without adequate sanitization. An attacker can inject format specifiers into ONVIF scope parameters to manipulate memory handling behavior.
Successful exploitation may cause the ONVIF management service to crash, resulting in DoS condition that impacts normal device operation.
Weakness: CWE-134
Which versions are affected by CVE-2026-6241?
How do I fix CVE-2026-6241?
No fix has been published for CVE-2026-6241 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-6241 being exploited?
There is no known exploitation of CVE-2026-6241 in the wild and no public exploit code.
Sources
Also known as GHSA-pmj5-p8gw-hpgq.