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 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.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 6.9
- CVSS vector
- 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
- EPSS probability
- 1.11%
- CISA KEV
- Known exploited vulnerability
- CWE
- CWE-1023
- Published
- 2026-06-05
- Last modified
- 2026-06-10
Affected products
- Arista Networks EOS
- Arista Networks EOS
- Arista Networks EOS
- Arista Networks EOS
- Arista Networks EOS
- Arista Networks EOS
- Arista Networks EOS
Weakness type
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