CVE-2026-73468

published 2026-09-16

CVE-2026-73468: A specially crafted packet can cause the premature expiry of multicast forwarding state on affected interfaces, potentially resulting in temporary multicast…

Priority P4 28 medium 6.5 CVSS 3.1

AV A AC L PR N UI N S U C N I N A H

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.

Affected

5 ranges

Vendor	Product	Version range	Fixed in
arista_networks	eos	>= 1.0.0 < 4.33.0F	4.33.0F
arista_networks	eos	4.33.0F – 4.33.8M	—
arista_networks	eos	4.34.0F – 4.34.7.1M	—
arista_networks	eos	4.35.0F – 4.35.5M	—
arista_networks	eos	4.36.0F – 4.36.1F	—

CVSS provenance

nvd v3.1 6.5 MEDIUM CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd v4.0 7.1 HIGH CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.

CWE-670