CVE-2026-73468

Security Advisory 0175

State: Published
Severity: 7.1 High
Published: Sep 16, 2026
Updated: Sep 16, 2026
Reserved: Aug 12, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	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	Arista
3.1	6.5 Medium	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	Arista

Weaknesses

CWE-670 Always-Incorrect Control Flow Implementation

Affected Products

Product	Versions
EOSArista Networks	1.0.0 to before 4.33.0FAffected 4.33.0F through 4.33.8MAffected 4.34.0F through 4.34.7.1MAffected 4.35.0F through 4.35.5MAffected 4.36.0F through 4.36.1FAffected

References

https://www.arista.com/en/support/advisories-notices/security-advisory/24731-security-advisory-0175vendor-advisory

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