CVE-2018-25239 Smart VPN 1.1.3.0 Denial of Service via Search
Local attackers can crash the Smart VPN application by submitting oversized input to the search interface, causing a denial of service.
- 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-2018-25239?
CVE-2018-25239 is a medium-severity denial of service vulnerability in SmartVPN Smart VPN, published on 4 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Smart VPN 1.1.3.0 contains a denial of service vulnerability that allows local attackers to crash the application by submitting oversized input through the search interface. Attackers can paste a buffer of 2100 characters into the top right search bar to trigger an unhandled exception that crashes the application.
Weakness: CWE-470
Which versions are affected by CVE-2018-25239?
How do I fix CVE-2018-25239?
No fix has been published for CVE-2018-25239 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2018-25239 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-25239 exists.
Sources
Also known as GHSA-gwr9-q5w7-g798.