CVE-2026-0259

MEDIUM

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

Title source: manual
STIX 2.1

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 v4 5.0
EPSS 0.0028
EPSS Percentile 19.3%
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:U/V:C/RE:M/U:Amber

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-73
Status published
Products (4)
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
Published May 13, 2026
Tracked Since May 14, 2026