What is CVE-2026-102166?

CVE-2026-102166 is a high-severity vulnerability in Arista Networks Wi-Fi Access Point, classified under Use of Hard-coded Credentials. CVSS score: 8.8/10. Published 2026-11-10.

How severe is CVE-2026-102166?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Arista Networks Wi-Fi Access Point

CVE-2026-102166

Arista C-260 and C-250 access points ship with fleet-wide static cryptographic keys used for firmware image verification and SSLP authentication. An attacker who is able to access these keys would be able to create modified firmware that will pass verification checks. This vulnerability is specific to the C-260 and C-250 models; other access point models enforce digitally signed upgrade images with secure boot and are not affected by this issue.

Published 2026-11-10.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Arista Networks Wi-Fi Access Point

Weakness classification (CWE)

CWE-798 — Use of Hard-coded Credentials

References

www.arista.com/en/support/advisories-notices/security-advisory/25049-security-a… (vendor-advisory)

Frequently asked questions

What is CVE-2026-102166?: CVE-2026-102166 is a high-severity vulnerability in Arista Networks Wi-Fi Access Point, classified under Use of Hard-coded Credentials. CVSS score: 8.8/10. Published 2026-11-10.
How severe is CVE-2026-102166?: High severity. CVSS v3 base score is 8.8 out of 10.