CVE-2026-73468: Security Advisory 0175
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.
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 4.33.9M - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 4.34.8M - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 4.35.6M - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 4.36.2F
Event History
Frequently Asked Questions
What access does an attacker need to exploit this issue?
The attacker must be adjacent to the affected device or network segment and able to send a specially crafted packet. No privileges or user interaction are required.
Does this vulnerability expose or alter multicast traffic contents?
The reported impact is availability: multicast forwarding state may expire prematurely, causing temporary multicast traffic loss. The provided severity data indicates no confidentiality or integrity impact.