PAN-OS: Firewall Clusters using the MACsec Protocol Expose the Connectivity Association Key (CAK)
At a glance
Severity
MEDIUM 5.6
EPSS
EPSS 0.12 % · percentile 2 (2026-10-27)
State
PUBLISHED
Published
Updated
Assigner
palo_alto
NVD status
Deferred
Description
A problem with the implementation of the MACsec protocol in Palo Alto Networks PAN-OS® results in the cleartext exposure of the connectivity association key (CAK). This issue is only applicable to PA-7500 Series devices which are in an NGFW cluster.
A user who possesses this key can read messages being sent between devices in a NGFW Cluster. There is no impact in non-clustered firewalls or clusters of firewalls that do not enable MACsec.