9.6Critical
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.
What this means for your business
- An attacker can use it from inside the same network, without a login, and without anyone at your company clicking anything.
What to do
- 1Ask your IT team or provider whether any of your systems use the affected product.
- 2If you do, follow the vendor's guidance. No patch reference has been published yet.
Not sure if your company is exposed?
Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.
Scoring
- CVSS
- 9.6 (v3.1)
- Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H- CVSS v4
- 8.7
- Weakness
- CWE-306
- Assigned by
- psirt@arista.com
Dates
- Published
- 2026-09-16
- Last modified
- 2026-09-16
- Sources
- NVD