Medium severity5.8CISA KEVNVD Advisory· Published Jun 5, 2026· Updated Jun 9, 2026
CVE-2026-7473
CVE-2026-7473
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2Patches
Vulnerability mechanics
References
3- www.arista.com/en/support/advisories-notices/security-advisory/24005-security-advisory-0137nvdVendor AdvisoryMitigation
- www.arista.com/en/support/advisories-notices/security-advisory/22872-security-advisory-0137nvdBroken Link
- www.cisa.gov/known-exploited-vulnerabilities-catalognvdUS Government Resource
News mentions
4- CISA Adds Cisco, Chrome, and Arista Flaws to KEV Catalog Amid Active ExploitationThe Hacker News · Jun 10, 2026
- No Patch Planned for Exploited Arista EOS VulnerabilitySecurityWeek · Jun 10, 2026
- Arista EOS: Eleven Network Device Vulnerabilities Disclosed TogetherVypr Intelligence · Jun 5, 2026
- CISA Adds Three Known Exploited Vulnerabilities to CatalogCISA Alerts