CVE-2026-0259: CWE-73 External Control of File Name or Path in Palo Alto Networks WildFire WF-500 and WF-500-B
CVE-2026-0259 is a medium severity vulnerability in Palo Alto Networks WildFire WF-500 and WF-500-B appliances running default non-FIPS mode. It allows an attacker with low privileges to read sensitive files and delete arbitrary files on the affected appliance. This vulnerability does not affect the WildFire Public cloud service. A software update is available for on-premise WildFire appliances to address this issue.
AI Analysis
Technical Summary
This vulnerability (CWE-73) in Palo Alto Networks WildFire WF-500 and WF-500-B appliances enables arbitrary file read and deletion due to external control of file name or path. It affects versions 10.2.0, 11.1.0, 11.2.0, and 12.1.0 running in default non-FIPS configuration. The issue allows users with low privileges to read sensitive information and delete files arbitrarily. The WildFire Public cloud service is not impacted. A software update for on-premise appliances is available to remediate this vulnerability.
Potential Impact
An attacker with low privileges can read sensitive files and delete arbitrary files on the affected WildFire appliance, potentially leading to information disclosure and disruption of appliance functionality. The vulnerability does not affect the cloud service version of WildFire. There are no known exploits in the wild at this time.
Mitigation Recommendations
A software update is available from Palo Alto Networks for on-premise WildFire WF-500 and WF-500-B appliances to fix this vulnerability. Customers should apply the update promptly. Users of the WildFire Public cloud service are not affected and require no action. Patch status is not explicitly confirmed in the advisory, but the update availability indicates an official fix.
CVE-2026-0259: CWE-73 External Control of File Name or Path in Palo Alto Networks WildFire WF-500 and WF-500-B
Description
CVE-2026-0259 is a medium severity vulnerability in Palo Alto Networks WildFire WF-500 and WF-500-B appliances running default non-FIPS mode. It allows an attacker with low privileges to read sensitive files and delete arbitrary files on the affected appliance. This vulnerability does not affect the WildFire Public cloud service. A software update is available for on-premise WildFire appliances to address this issue.
CVSS v4.0
Score 5.0medium
Affected software
pkg:github/paloaltonetworks/wildfire-wf-500Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-73) in Palo Alto Networks WildFire WF-500 and WF-500-B appliances enables arbitrary file read and deletion due to external control of file name or path. It affects versions 10.2.0, 11.1.0, 11.2.0, and 12.1.0 running in default non-FIPS configuration. The issue allows users with low privileges to read sensitive information and delete files arbitrarily. The WildFire Public cloud service is not impacted. A software update for on-premise appliances is available to remediate this vulnerability.
Potential Impact
An attacker with low privileges can read sensitive files and delete arbitrary files on the affected WildFire appliance, potentially leading to information disclosure and disruption of appliance functionality. The vulnerability does not affect the cloud service version of WildFire. There are no known exploits in the wild at this time.
Mitigation Recommendations
A software update is available from Palo Alto Networks for on-premise WildFire WF-500 and WF-500-B appliances to fix this vulnerability. Customers should apply the update promptly. Users of the WildFire Public cloud service are not affected and require no action. Patch status is not explicitly confirmed in the advisory, but the update availability indicates an official fix.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- palo_alto
- Date Reserved
- 2025-11-03T20:44:19.922Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a04c4b4cbff5d8610fad29d
Added to database: 05/13/2026, 18:36:36 UTC
Last enriched: 05/20/2026, 19:09:24 UTC
Last updated: 07/31/2026, 19:22:57 UTC
Views: 56
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.