Is CVE-2026-7473 in the CISA KEV catalog?

Yes. CVE-2026-7473 is on the CISA Known Exploited Vulnerabilities list, added 2026-06-09.

What is the CVSS severity of CVE-2026-7473?

CVE-2026-7473 has a CVSS v3 base score of 5.8 (MEDIUM).

What is the EPSS score for CVE-2026-7473?

CVE-2026-7473 has an EPSS score of 0.84% (54th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2026-7473?

No published fix for CVE-2026-7473 has been found yet. It is on the CISA Known Exploited Vulnerabilities list; federal agencies must remediate by 2026-06-23. Apply the vendor's mitigations per CISA's guidance.

CVE & CISA-KEV Catalog

CVE-2026-7473

MEDIUMCISA KEV

5.8

CVSS v3

NVD

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.

CWE-1023

How to fix

Actively exploited, no published fix found yet

Federal remediation due: 2026-06-23

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeChanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

0.84%probability of exploitation in 30 days

54thpercentile

Moderate risk: more likely to be exploited than 54% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Remediation due: 2026-06-23

References

Vendor Advisory1

arista.com

Government Resource1

cisa.gov

Other references1

arista.com

Related Vulnerabilities

Other CWE-1023 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2021-23146	High	7.1	0.9%	-	Fix
CVE-2025-55333	High	6.1	0.8%	-	Fix
CVE-2026-4599	Critical	9.1	0.5%	-	Fix
CVE-2024-5528	Low	3.5	0.4%	-	Fix
CVE-2026-48587	Low	3.1	0.4%	-	Fix
CVE-2026-48761	Medium	6.1	0.3%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-09.