What is CVE-2026-73468?

CVE-2026-73468 is a medium-severity vulnerability in Arista Networks Eos, classified under Always-Incorrect Control Flow Implementation. CVSS score: 6.5/10. Published 2026-09-16.

How severe is CVE-2026-73468?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Arista Networks Eos

CVE-2026-73468

A specially crafted packet can cause the premature expiry of multicast forwarding state on affected interfaces, potentially resulting in temporary multicast traffic loss during the affected period.

Published 2026-09-16 · last modified 2026-09-16.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.003 (21.6th percentile), scored 2026-10-31.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 21.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Arista Networks Eos

Weakness classification (CWE)

CWE-670 — Always-Incorrect Control Flow Implementation

References

www.arista.com/en/support/advisories-notices/security-advisory/24731-security-a… (vendor-advisory)

Frequently asked questions

What is CVE-2026-73468?: CVE-2026-73468 is a medium-severity vulnerability in Arista Networks Eos, classified under Always-Incorrect Control Flow Implementation. CVSS score: 6.5/10. Published 2026-09-16.
How severe is CVE-2026-73468?: Medium severity. CVSS v3 base score is 6.5 out of 10.