CVE-2026-0256

MEDIUM EPSS 19.7%

Published May 13, 20261mo ago · Modified Jun 17, 20261w ago

4.4 CVSS 4.0

Medium

Published May 13, 2026 1mo ago

Last Modified Jun 17, 2026 1w ago

Description

A stored cross-site scripting (XSS) vulnerability in Palo Alto Networks PAN-OS® software enables a malicious authenticated administrator to store a JavaScript payload using the web interface. This issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series). Cloud NGFW and Prisma® Access are not impacted by this vulnerability.

CVSS Details

Base Score

4.4

Exploitability

—

Impact

—

Vector string

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:H/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:N/R:U/V:D/RE:M/U:Amber

Attack Vector Network

Attack Complexity Low

Privileges Required High

User Interaction P

Scope X

Threat Intelligence

EPSS Exploit Probability

19.7% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

References 2

cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-967325.html
security.paloaltonetworks.com https://security.paloaltonetworks.com/CVE-2026-0256

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.