Arista Networks vulnerabilities & exploitation

Exploitation timeline

Threadlinqs has recorded 6 Arista Networks CVEs published between 2026-07-15 and 2026-09-15. The busiest month was 2026-09 (5 new CVEs). 2 of them (33%) are listed in CISA KEV, which means exploitation in the wild has been confirmed.

Most exploited vulnerabilities

Ranked with CISA KEV listings first, then EPSS exploit probability, then CVSS score. Showing 6 of 6 tracked Arista Networks CVEs.

• CVE-2026-93952critical 10KEVEPSS 1.1%2026-09-22
• CVE-2026-16812critical 10KEVEPSS 0.9%2026-07-27
• CVE-2026-75944low 2.6EPSS 0.1%2026-09-14
• CVE-2026-77191low 2.6EPSS 0.1%2026-09-14
• CVE-2026-75943low 2.6EPSS 0.1%2026-09-14
• CVE-2026-75945low 2.6EPSS 0.1%2026-09-14

Products affected

Threadlinqs normalises CPE and CNA product records across all 6 CVEs; 3 distinct Arista Networks products are affected. The most frequently affected:

• EOS 4 CVEs
• VeloCloud Orchestrator (VCO) On-Prem 1 CVE
• VeloCloud Orchestrator On-Prem 1 CVE

Threat activity

5 tracked threat campaigns reference Arista Networks products or exploit Arista Networks CVEs:

• CISA Adds Four Actively Exploited KEVs: Check Point Gateway/Management RCE Flaws, Arista VeloCloud Orchestrator Auth Bypass, F5 BIG-IP APM Heap OverflowCRITICAL2026-09-26
• CVE-2026-16812 — Critical Unauthenticated OS Command Injection in Arista VeloCloud Orchestrator Actively ExploitedCRITICAL2026-08-03
• CISA Adds Two Known Exploited Vulnerabilities to Catalog: Fortinet FortiOS Information Disclosure (CVE-2025-68686) and Arista VeloCloud Orchestrator OS Command Injection (CVE-2026-16812)CRITICAL2026-07-27
• CVE-2025-6978: Authenticated Diagnostics Command Injection Leading to Root RCE in Arista NG FirewallHIGH2026-07-19
• CVE-2026-7473: Arista EOS Tunnel Decapsulation Protocol-Confusion Bypass — No Vendor Patch, Actively ExploitedCRITICAL2026-06-16

How to prioritise Arista Networks patching

This order follows the data Threadlinqs holds for Arista Networks, not a generic severity checklist:

• 2 of 6 Arista Networks CVEs (33%) are in CISA KEV: treat them as actively exploited and remediate them first, starting with CVE-2026-93952, CVE-2026-16812.
• Outside KEV, the highest EPSS scores are CVE-2026-75944 (0.1%), CVE-2026-77191 (0.1%), CVE-2026-75943 (0.1%).
• 2 CVEs score Critical and 0 High on CVSS v3 (maximum 10, average 5.1); sequence these after KEV and high-EPSS items.

About this data

Vendor attribution comes from the CNA and CPE product records of each CVE, folded to one vendor name; CVSS, EPSS and KEV status are read from the Threadlinqs CVE catalog; campaign and actor links come from tracked threat records. Counts reflect the data as of 2026-10-05 and refresh daily.