VULNERABILITY INTELLIGENCE
CVE-2026-73458
CVSS score8.2 HIGH
EPSS probability0.40%
CISA KEVNot currently listed
Published2026-09-15
Last modified2026-09-16
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
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).
Weakness classification
- psirt@arista.com: CWE-303