CVE-2026-102162: Arista Wi-Fi Access Point stack overflow in wireless gateway service

CVE-2026-102162 · Severity: high · CVSS 8.8 · Published 2026-10-06

Arista Wi-Fi access points with captive portal or application firewall enabled are vulnerable to a stack overflow in the wireless gateway service. An attacker on the network can send a crafted packet to trigger a denial-of-service or execute arbitrary code on the device. The service automatically restarts after crashing, enabling repeated attack attempts.

Technologies: Arista Wi-Fi Access Point. Vendors: Arista.

Quick answers

Is CVE-2026-102162 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-102162 being exploited in the wild.
How severe is CVE-2026-102162?
High severity, with a CVSS score of 8.8, published 6 October 2026.
Which products and versions are affected?
Arista Wi-Fi Access Point 22.0.1F-32 and below (22.x train), 21.3.0M-13 and below (21.x train), and all prior releases.
Is there a fix for CVE-2026-102162?
Yes: fixed in 22.1.1F-61 and later (22.x train), 21.4.0M-12 and later (21.x train). Until then: Disable captive portal and application firewall on all SSIDs if these features are not required; this eliminates exposure to the vulnerability. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-102162 attacked?
It is attacked from the adjacent network, in a network appliance.
Am I affected by CVE-2026-102162?
Check whether you run Arista Wi-Fi Access Point at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: 22.1.1F-61 and later (22.x train), 21.4.0M-12 and later (21.x train)

Disable captive portal and application firewall on all SSIDs if these features are not required; this eliminates exposure to the vulnerability.

Technical details

A stack-based buffer overflow (CWE-121) in the wireless gateway service allows unauthenticated, network-adjacent attackers to trigger arbitrary code execution or denial of service by sending a crafted packet. Exploitation requires captive portal or application firewall to be enabled on at least one SSID. The vulnerable service auto-restarts after a crash, facilitating repeated exploitation.

Affected products

  • Arista Wi-Fi Access Point 22.0.1F-32 and below (22.x train), 21.3.0M-13 and below (21.x train), and all prior releases

Timeline

  • 2026-10-06: disclosed

References

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