CVE-2026-0259 WildFire WF-500 and WF-500-B: Arbitrary File Read and Delete Vulnerability in WildFire Appliance (WF-500, WF-500-B)
Attackers can read sensitive information and delete arbitrary files on WildFire WF-500 appliances running in default non-FIPS mode.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-0259?
CVE-2026-0259 is a medium-severity path traversal vulnerability in Paloaltonetworks Pan-Os, published on 13 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-73
Which versions are affected by CVE-2026-0259?
It affects 1 product.
Products include Paloaltonetworks Pan-Os.
How do I fix CVE-2026-0259?
No fix has been published for CVE-2026-0259 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-0259 being exploited?
There is no known exploitation of CVE-2026-0259 in the wild and no public exploit code.
Other vulnerabilities in Paloaltonetworks Pan-Os
- CVE-2024-3400 Palo Alto Networks PAN-OS Command Injection
- CVE-2020-2021 Palo Alto Networks PAN-OS Authentication Bypass
- CVE-2017-15944 Palo Alto Networks PAN-OS Remote Code Execution
- CVE-2026-0300 Palo Alto Networks PAN-OS Out-of-bounds Write
- CVE-2024-0012 Palo Alto Networks PAN-OS Management Interface Authentication Bypass
Sources
Also known as GHSA-7g39-pmpc-x999.