PT-2026-47015 · Arista Networks · Eos

Published 2026-06-05 · Updated 2026-06-05 · CVE-2026-2379

Mitre

CVSS v3.1

5.9

Medium

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

On affected platforms with hardware IPSec support running Arista EOS with certain IPsec features enabled, EOS may exhibit unexpected behavior in specific cases. Physical interface flaps and certain agent restarts can cause IPsec tunnel re-establishment with existing Security Associations, resulting in sequence number mismatches between tunnel endpoints potentially causing unstable communication.

Fix

Weakness Enumeration

CWE-672

Related Identifiers

CVE-2026-2379

Affected Products

Eos

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-2379 · Security Note
• https://arista.com/en/support/advisories-notices/security-advisory/23419-security-advisory-0134 · Vendor Advisory