Meltdown and Spectre update for WildFire-500 Appliance (PAN-SA-2018-0002)

Last revised: 05/16/2018


Palo Alto Networks has determined that the WildFire-500 (WF-500) appliance is affected by the vulnerability disclosures known as Meltdown and Spectre, and has completed an update to address these issues. The WF-500 software update is now available to customers that use the WF-500 appliance for on-premise sandboxing. Please note that customers using the WildFire cloud service are NOT impacted by this advisory. (PAN-91139/CVE-2017-5715)

Severity: Low

Successful exploitation of this issue may allow reads from the guest image to the host residing in a sandbox appliance. The analysis method utilized by the WF-500 mitigates the impact of this issue.

Products Affected

WF-500 (WildFire Appliance) running appliance software versions 8.0.9 and earlier; all versions of 7.1, 7.0, and 6.1. Please note: WF-500 appliance software versions 8.1.0 and later are not impacted by this advisory.

Available Updates

WF-500 appliance software version 8.0.10 and later. For WF-500 appliance software versions 7.1 and earlier, please consult the Administrator’s Guide for steps to upgrade (

Workarounds and Mitigations

Customers not using the WF-500 WildFire Appliance are not impacted by this advisory. Customers using the WildFire cloud are not impacted by this advisory.