CVE-2026-86106: Missing Auth (CVSS 9.6)

Description

An unauthenticated actor with network access to the private HA interconnect may trigger sensitive HA peer functions without verification. This could result in elevated command execution on Edge units where HA is enabled.

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CVSS v3.1 Score

9.6

CRITICAL

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

Weakness Type (CWE)

CWE-306 Missing Authentication

References

Other References

https://www.arista.com/en/support/advisories-notices/security-advisory/24735-security-advisory-0179

Frequently Asked Questions

What is CVE-2026-86106? +

An unauthenticated actor with network access to the private HA interconnect may trigger sensitive HA peer functions without verification. This could result in elevated command execution on Edge units where HA is enabled. It has a CVSS v3.1 base score of 9.6 (CRITICAL).

How severe is CVE-2026-86106? +

CVE-2026-86106 has a CVSS v3.1 score of 9.6 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

How do I check if I'm vulnerable to CVE-2026-86106? +

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.

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CVE-2026-86106