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CVE-2026-0259 WildFire WF-500 and WF-500-B: Arbitrary File Read and Delete Vulnerability in WildFire Appliance (WF-500, WF-500-B) (Severity: MEDIUM)

mediumCVE-2026-0259

CSIRTS triage

vendor: Palo Alto Networksproduct: WildFire WF-500Other
What
An arbitrary file read and delete vulnerability exists in WildFire appliances.
Who is affected
Deployments of WildFire WF-500 and WF-500-B are affected.
Urgency
Remediation is necessary due to the medium severity of the vulnerability.
Action
Update WildFire appliances to the latest version to address the vulnerability.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
Palo Alto Networks Security Advisories (INTL · vendor-psirt · site)
Severity
medium
Published
2026-05-28
Exploitation
Not in CISA KEV at last sync

Original advisory: https://security.paloaltonetworks.com/CVE-2026-0259

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-0259coverage & exploitation statusNVD · CVE.org

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