CVE-2026-71933 DrayTek VigorSwitch Multiple Models Missing Authorization in Syslog Functions
Remote attackers can modify configuration, restart services, or clear logs on DrayTek VigorSwitch devices due to missing authorization checks in syslog functions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-71933?
CVE-2026-71933 is a high-severity missing authorization vulnerability in DrayTek Corporation VigorSwitch FX2120, published on 24 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Multiple DrayTek VigorSwitch models contain unauthorized operation vulnerabilities in multiple syslog functions. The vulnerability is caused by missing authorization checks. A remote attacker can trigger these vulnerabilities via crafted requests to modify configuration, restart services, save startup configuration, or clear logs.
Weakness: CWE-862
Which versions are affected by CVE-2026-71933?
How do I fix CVE-2026-71933?
No fix has been published for CVE-2026-71933 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-71933 being exploited?
There is no known exploitation of CVE-2026-71933 in the wild and no public exploit code.
Sources
Also known as GHSA-x2c7-pf46-x3p9.