CVE-2026-0259
HighCVSS 8.8Exploitation Probability (EPSS)
Low risk20th percentile - higher than 20% of all known CVEs
Summary
An arbitrary file read and delete vulnerability in Palo Alto Networks WildFire WF-500 and WF-500-B appliances in default non-FIPS mode allows reading sensitive information and deleting arbitrary files.
Risk Assessment
The risk includes exposure of sensitive data and loss of system integrity due to deletion of critical files, potentially causing device downtime.
Recommendation
Immediately update the WildFire Appliance (WF-500, WF-500-B) software to the latest available version. Customers using the WildFire Public cloud service are not affected.
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Original NVD description (English source)
An arbitrary File Read and Delete Vulnerability in Palo Alto Networks WildFire® WF-500 and WF-500-B appliances enables users to read sensitive information and delete arbitrary files. This vulnerability affects WF-500 and WF-500-B appliances running in the default non-FIPS configuration mode. The WildFire Appliance (WF-500, WF-500-B) software update is now available to customers that use the WildFire Appliance (WF-500, WF-500-B) for on-premise sandboxing. Please note that customers using the WildFire Public cloud service are NOT impacted by this vulnerability.