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CVE-2026-7473 — security_identifier — Clarity Today

security_identifier

CVE-2026-7473

Identifier for a tunnel decapsulation flaw in Arista EOS in which a device configured as a tunnel endpoint decapsulates packets matching its decapsulation IP without checking the tunnel protocol type.

Known aliases

Arista Security Advisory 0137

Relationships

No evidence-backed relationships are recorded.

Current clusters

build1 distinct publisher

Arista's decap path checks the destination IP but never the tunnel protocol

Arista scores CVE-2026-7473 at 5.8 and says it is already being exploited. With every EOS train on the affected list, the thing that decides your exposure is whether a given device terminates a tunnel at all.

Publishers:arista.com

Reality

Evidence70
Adoption: Insufficient
Hype gap+12
Incentives70
Confidence