CVE-2026-73458
HIGH
NVD
CVSS Score
8.2
Severity
HIGH
Published
Sep 15, 2026
Vendor
unknown
Description
On affected platforms running Arista EOS with authenticated Bidirectional Forwarding Detection (BFD) sessions configured, a specially crafted packet can cause the BFD session(s) to go down. This may result in undesirable network changes because various routing protocols monitor status on BFD session(s).