CVE-2026-102162

Security Advisory 0193

Published Oct 6, 2026 CVSS 4.0 · 9.4 Critical EPSS < 1% KEV · Not listed
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.

Remediation

Vendor Solution

CVE-2026-102162 has been fixed in the following releases: - 22.1.1F-61 and later release in the 22.x train - 21.4.0M-12 and later releases in the 21.x train


Vendor Workaround

If captive portal and application firewall are not required, disabling these features on all SSIDs eliminates exposure to this vulnerability.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Arista
Arista wi-fi Access Points
Vendors & Products Arista
Arista wi-fi Access Points
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Security Advisory 0193
Weaknesses CWE-121
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.4, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Arista
Published
Updated
Oct 6, 2026, 8:06 PM
Reserved
Sep 28, 2026, 5:41 PM
Status
Awaiting Analysis
Published
Oct 6, 2026, 8:17 PM
Modified
Oct 7, 2026, 1:38 PM