Is CVE-2026-0259 actively exploited?

No active exploitation of CVE-2026-0259 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-0259 be exploited remotely?

Yes. CVE-2026-0259 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-0259?

CVE-2026-0259 has a CVSS score of 5.0 (MEDIUM).

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MEDIUM

CVE-2026-0259

CWE-73Published: May 13, 2026· Updated: May 14, 2026

5.0

CVSS v3.1

EPSS:0.05%probability of exploitation in 30 daysPercentile:15.6th

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.

NVD Source

Technical Analysis

CVE-2026-0259 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.Low

User InteractionNone

ScopeX

Impact

Confidentiality

Integrity

Availability

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