CVE-2026-0259

HIGH

Palo Alto WildFire WF-500/WF-500-B - Arbitrary File Read/Delete

Title source: manual

Description

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.

References (1)

Core 1

Core References

Vendor Advisory vendor-advisory

https://security.paloaltonetworks.com/CVE-2026-0259

Scores

CVSS v3 8.8

EPSS 0.0034

EPSS Percentile 26.2%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-73

Status published

Products (6)

Palo Alto Networks/WildFire WF-500 and WF-500-B 10.2.0 - 10.2.18-h6, 10.2.16-h7, 10.2.13-h21, 10.2.10-h36, 10.2.7-h34

Palo Alto Networks/WildFire WF-500 and WF-500-B 11.1.0 - 11.1.13,11.1.10-h8

Palo Alto Networks/WildFire WF-500 and WF-500-B 11.2.0 - 11.2.11,11.2.7-h7

Palo Alto Networks/WildFire WF-500 and WF-500-B 12.1.0 - 12.1.7, 12.1.4-h5

paloaltonetworks/pan-os 10.2.7 (26 CPE variants)

paloaltonetworks/pan-os 10.2.10 (20 CPE variants)

Published May 13, 2026

Tracked Since May 14, 2026