Description
On affected Arista Wi-Fi access points with captive portal, or application firewall enabled on at least one SSID, a vulnerability in the wireless gateway service could allow an unauthenticated network-adjacent attacker to send a crafted packet that triggers a stack overflow, resulting in a denial-of-service condition or potentially execute arbitrary code on the device. The wireless gateway service is automatically restarted after a crash, allowing repeated exploitation attempts.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Arista Networks | Wi-Fi Access Points | 22.0.0 – ≤ 22.0.1F-32, 21.3.0 – ≤ 21.3.0M-13, 1.0.0 – < 21.3.0 | 21.3.0 |
Advisories 1
- WID-SEC-2026-3775 Arista WiFi Access Point: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 6, 2026