What is CVE-2026-7473?

CVE-2026-7473 is a medium-severity vulnerability in Arista 7020sr-24c2, classified under CWE-1023. CVSS score: 5.8/10. Published 2026-06-05.

How severe is CVE-2026-7473?

Medium severity. CVSS v3 base score is 5.8 out of 10.

Is CVE-2026-7473 known to be exploited?

Yes. CVE-2026-7473 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-06-09), indicating it is being actively exploited. 1 public proof-of-concept repositories are indexed.

Vulnerability in Arista 7020sr-24c2

CVE-2026-7473

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 dec…

EPSS: 0.008 (53.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N.

Affected products

Weakness classification (CWE)

CWE-1023

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2026-06-09. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2026-06-23.

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.

Public proof-of-concept exploits

fevar54/CVE-2026-7473---Arista-EOS-Tunnel-Decapsulation-Bypass

References

psirt@arista.com (vendor-advisory, Broken Link)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (Mitigation, Vendor Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2026-7473?: CVE-2026-7473 is a medium-severity vulnerability in Arista 7020sr-24c2, classified under CWE-1023. CVSS score: 5.8/10. Published 2026-06-05.
How severe is CVE-2026-7473?: Medium severity. CVSS v3 base score is 5.8 out of 10.
Is CVE-2026-7473 known to be exploited?: Yes. CVE-2026-7473 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-06-09), indicating it is being actively exploited. 1 public proof-of-concept repositories are indexed.