Strix
26.1K

CVE-2026-0259

HIGHCVSS 8.8/10EPSS 0.28%

Last modified

CVE-2026-0259 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.. EPSS estimates a 0.28% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
8.8/10

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

CVSS 4.0
5/10

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

EPSS Probability
0.28%

19.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
PaloaltonetworksPan-Os< 10.2.7
PaloaltonetworksPan-Os>= 10.2.8, < 10.2.10
PaloaltonetworksPan-Os>= 10.2.11, < 10.2.13
PaloaltonetworksPan-Os>= 10.2.14, < 10.2.16
PaloaltonetworksPan-Os10.2.7
PaloaltonetworksPan-Os10.2.10
PaloaltonetworksPan-Os10.2.13
PaloaltonetworksPan-Os10.2.16
PaloaltonetworksPan-Os10.2.17
PaloaltonetworksPan-Os10.2.18
PaloaltonetworksPan-Os>= 11.1.0, < 11.1.4
PaloaltonetworksPan-Os>= 11.1.5, < 11.1.6
PaloaltonetworksPan-Os>= 11.1.8, < 11.1.10
PaloaltonetworksPan-Os>= 11.1.11, < 11.1.13
PaloaltonetworksPan-Os11.1.4
PaloaltonetworksPan-Os11.1.6
PaloaltonetworksPan-Os11.1.7
PaloaltonetworksPan-Os11.1.10
PaloaltonetworksPan-Os11.1.13
PaloaltonetworksPan-Os11.1.14
PaloaltonetworksPan-Os>= 11.2.0, < 11.2.4
PaloaltonetworksPan-Os>= 11.2.5, < 11.2.7
PaloaltonetworksPan-Os>= 11.2.8, < 11.2.10
PaloaltonetworksPan-Os11.2.4
PaloaltonetworksPan-Os11.2.7
PaloaltonetworksPan-Os11.2.10
PaloaltonetworksPan-Os11.2.11
PaloaltonetworksPan-Os>= 12.1.0, < 12.1.4
PaloaltonetworksPan-Os>= 12.1.5, < 12.1.7
PaloaltonetworksPan-Os12.1.4

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2026-0259?
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.
How severe is CVE-2026-0259?
CVE-2026-0259 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.28% probability of exploitation in the next 30 days.
How do I fix CVE-2026-0259?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

Related CVEs from 2026

View all 2026CVEs →

Are you affected by CVE-2026-0259?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST