CVE-2026-7473
MEDIUMCISA KEVDescription
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.
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
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Exploit Intelligence
Moderate risk: more likely to be exploited than 63% of all known CVEs.
Remediation due: 2026-06-23
References
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-2026-24255 | High | 7.5 | 0.4% | - | - |
| CVE-2026-48587 | Low | 3.1 | 0.4% | - | Fix |
Common questions
How do I fix 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.
Is CVE-2026-7473 being actively exploited?
Yes. CVE-2026-7473 is listed in the CISA Known Exploited Vulnerabilities catalog, which means exploitation has been observed in the wild. US federal agencies were required to remediate it by 2026-06-23. Treat it as a priority whatever its CVSS score says.
How severe is CVE-2026-7473?
CVE-2026-7473 has a CVSS v3 base score of 5.8, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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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.