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CVE-2026-7473

5.8, medium Known exploited

Arista Extensible Operating System Incomplete Comparison with Missing Factors Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab) CISA KEV catalogue (opens in a new tab)
CVSS
5.8, medium medium CVSS v3.1
EPSS, next 30 days
0.6% higher than 50% of scored CVEs
Exploitation
Confirmed in the wild
Published
5 Jun 20264 months ago

Known exploited

CISA added this to the Known Exploited Vulnerabilities Catalog on 9 Jun 2026. US federal agencies had to remediate by 23 Jun 2026, a deadline that has passed.

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.

Description

On affected platforms running Arista EOS where a tunnel decapsulation configuration,such as VXLAN (Virtual Extensible LAN), decap-groups, or a GRE (Generic Routing Encapsulation) tunnel interface,is present, the switch will incorrectly decapsulate and forward other unexpected tunneled packet with a destination IP matching its configured decapsulation IP. This occurs because the switch does not verify the tunnel protocol type, potentially leading to the unexpected processing of non-configured tunnel traffic. This issue has been reported as being exploited in the wild.

Details

Vendor
Arista
Product
EOS
Weakness
CWE-1023 (opens in a new tab)
Status
Analyzed
Updated
7 Oct 2026
Assigner
psirt@arista.com

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

References 3

Advisories 2

Other references 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Arista CVEs

Every Arista CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-93952 Arista VeloCloud Orchestrator Improper Input Validation Vulnerability KEV EPSS 1% 10, critical
  • CVE-2026-16812 Arista VeloCloud Orchestrator On-Prem OS Command Injection Vulnerability KEV EPSS 1% 10, critical

Beyond this page

Is CVE-2026-7473 in your network?

This page tells you how dangerous CVE-2026-7473 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

CVE-2026-7473 is in the CISA catalogue of exploited vulnerabilities: attackers are already exploiting it.

  • EXYS7600 OCELOT

    Find it before attackers do

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  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.