Exploited vulnerabilities / CVE-2026-7473

Confirmed exploited · exploited vulnerability · Arista Extensible Operating System

CVE-2026-7473

Arista Extensible Operating System exploited vulnerability, confirmed exploited in the wild.

Arista Extensible Operating System (EOS) contains an incomplete comparison with missing factors vulnerability when the switch incorrectly decapsulate and forwards other unexpected tunneled packet with a destination IP matching its configured decapsulation IP.

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1.1%chance of exploitation in the next 30 days (EPSS), 66th percentile

9 Junadded to CISA's Known Exploited Vulnerabilities list, 2026

23 Junfederal remediation deadline, already passed

Passedpast the deadline: patch now

CISA's name for it	Arista Extensible Operating System Incomplete Comparison with Missing Factors Vulnerability
Vendor and product	Arista · Extensible Operating System
Type	exploited vulnerability · CWE-1023
Exploited	Confirmed by CISA listed 9 June 2026
Likelihood	scored lower by EPSS, but already confirmed exploited, which outranks any prediction
Deadline	23 June 2026 · already passed
Used in ransomware	Not reported
Advisories	www.arista.com ↗ · nvd.nist.gov ↗

What to do

Three steps, in this order

Step 1

Apply the vendor's fix or mitigation; CISA lists only vulnerabilities seen exploited.

Step 2

If you cannot patch now, restrict network access to the affected product.

Step 3

Check for signs of compromise since the date it was added to the list.

CISA's required action	Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

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Questions

CVE-2026-7473 in short

Is CVE-2026-7473 being exploited?

Yes. CISA added CVE-2026-7473 to its Known Exploited Vulnerabilities catalogue on 9 June 2026, which it does only on evidence of exploitation in the wild.

What is the CISA deadline for CVE-2026-7473?

US federal agencies must remediate it by 23 June 2026. Everyone else should treat that date as the latest safe point to patch an internet-facing system.

How likely is CVE-2026-7473 to be exploited in the next 30 days?

FIRST's Exploit Prediction Scoring System gives it 1.1%, the 66th percentile of every CVE it scores.

How do I fix CVE-2026-7473?

Apply the vendor's fix or mitigation; CISA lists only vulnerabilities seen exploited. If you cannot patch now, restrict network access to the affected product. Check for signs of compromise since the date it was added to the list.

Same vendor

Other Arista vulnerabilities being exploited

CVE	Product	Type	Listed
CVE-2026-114625	VeloCloud Orchestrator	SQL injection	23 October 2026
CVE-2026-93952	VeloCloud Orchestrator	privilege escalation	22 September 2026
CVE-2026-16812	VeloCloud Orchestrator	command injection	27 July 2026

Sources: CISA Known Exploited Vulnerabilities catalogue (released 10 November 2026) and FIRST EPSS. Page compiled automatically by SAK T.L.M, the threat-intelligence tool of SAK T.E.C, on 13 November 2026.