# CVE-2026-7473

## Summary

- **CVE ID:** CVE-2026-7473
- **Severity:** MEDIUM
- **CVSS Score:** 6.9 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N)
- **CWE:** CWE-1023
- **Published:** Jun 5, 2026
- **Last Modified:** Jun 10, 2026

## 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.

## Affected Products

- Arista Networks — EOS (4.36.0)
- Arista Networks — EOS (4.35.0)
- Arista Networks — EOS (4.34.0)
- Arista Networks — EOS (4.33.0)
- Arista Networks — EOS (4.32.0)
- Arista Networks — EOS (4.31.0)
- Arista Networks — EOS (*)

## References

- [CNA](https://www.arista.com/en/support/advisories-notices/security-advisory/22872-security-advisory-0137)
- [CISA-ADP](https://www.arista.com/en/support/advisories-notices/security-advisory/24005-security-advisory-0137)
- [CISA-ADP](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-7473)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 1.11%
- **EPSS Percentile:** 63.9

## Known Exploited Vulnerabilities (KEV)

- **Date Added:** Jun 9, 2026
- **Due Date:** Jun 23, 2026

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._