MEDIUM 6.9 NVD
CVE-2026-71920
Multiple DrayTek VigorSwitch models contain a null pointer dereference vulnerability in the formlogout function. The vulnerability is caused by missing checks f
Multiple DrayTek VigorSwitch models contain a null pointer dereference vulnerability in the formlogout function. The vulnerability is caused by missing checks for an empty or absent Cookie header before string handling. A remote attacker can trigger this vulnerability via a crafted request to crash the service and cause a denial of service. Exploitation requires valid administrative credentials for the device's web management interface.
References
- https://www.draytek.com/about/security-advisory/multiple-vulnerabilities-in-vigorswitch-se
- https://www.vulncheck.com/advisories/draytek-vigorswitch-multiple-models-null-pointer-dere
This medium severity vulnerability with a CVSS score of 6.9 was published on 2026-08-24 via NVD.
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