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CVE-2026-7473

Arista EOS Unexpected Tunnel Protocol Decapsulation and Forwarding Bypass

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.

CVSS 4.0 · 6.9 Medium EPSS 1.1% KEV · Listed
Vendors
Arista
Products
7020sr-24c2 7020sr-32c2 7020srg-24c2 and 99 more
CVE-2023-3646

On affected platforms running Arista EOS with mirroring to multiple destinations configured, an internal system error may trigger a kernel panic and cause system reload.

On affected platforms running Arista EOS with mirroring to multiple destinations configured, an internal system error may trigger a kernel panic and cause system reload.

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed
Vendors
Arista
Products
7280cr3-32d4 7280cr3-32p4 7280cr3-36s and 44 more
CVE-2023-24548

On affected platforms running Arista EOS with VXLAN configured, malformed or truncated packets received over a VXLAN tunnel and forwarded in hardware can cause egress ports to be unable to forward packets

On affected platforms running Arista EOS with VXLAN configured, malformed or truncated packets received over a VXLAN tunnel and forwarded in hardware can cause egress ports to be unable to forward packets. The device will continue to be susceptible to the issue until remediation is in place.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Arista
Products
7280cr3-32d4 7280cr3-32p4 7280cr3-36s and 41 more