CVE-2026-102166: Hardcoded Credentials (CVSS 8.8)

Description

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.

Is your site exposed to CVE-2026-102166?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

8.8

HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0023

Probability of exploitation

0.14%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-798 CWE-798

References

Other References

https://www.arista.com/en/support/advisories-notices/security-advisory/25049-security-advisory-0227

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-102166? +

CVE-2026-102166 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0023, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-102166? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-42251

Use of hard-coded credentials in KS-SOMED allowed an unauthorized attacker access to FTP server that hosted the application's update packages. …

CVE-2026-61740

LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.5.4, when LightRAG is deployed with LIGHTRAG_API_KEY set but AUTH_ACCOUNTS unset, …

CVE-2026-118458

The shared AIS login routing selects a production-shipped test DAO and plaintext comparison for the H and V application codes, …

CVE-2025-3426

We observed that Intellispace Portal binaries doesn’t have any protection mechanisms to prevent reverse engineering. Specifically, the app’s code is …

CVE-2025-4049

Use of hard-coded, the same among all vulnerable installations SQLite credentials vulnerability in SIGNUM-NET FARA allows to read and manipulate …

CVE-2025-4569

An insecure sensitive key storage issue was found in MyASUS. potentially allowing unauthorized actor to obtain a token that could …