CVE-2026-102168 Security Advisory 0194
Unauthenticated users can crash the captive portal service on Arista Wi-Fi access points via crafted HTTP requests, causing temporary 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-2026-102168?
CVE-2026-102168 is a high-severity denial of service vulnerability in Arista Networks Wi-Fi Access Points, published on 6 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
On affected Arista Wi-Fi access points with Captive Portal enabled, an unauthenticated wireless client connected to a Captive-Portal-enabled SSID can crash the portal service with a crafted HTTP request. This results in a temporary denial of service until the service automatically restarts. Remote code execution is not possible.
Weakness: CWE-191
Which versions are affected by CVE-2026-102168?
How do I fix CVE-2026-102168?
No fix has been published for CVE-2026-102168 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-2026-102168 being exploited?
There is no known exploitation of CVE-2026-102168 in the wild and no public exploit code.
Sources
Also known as GHSA-v59j-jpcg-c5vq.