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Low · 2.7 Public exploit CVE-2026-0265 EUVD-2026-30066GHSA-qcp7-r34x-6gv6

PAN-OS: Authentication Bypass with Cloud Authentication Service (CAS) enabled

Published May 13, 2026 · Updated Oct 15, 2026 · Assigned by palo_alto

Vendor: Palo Alto Networks Product: Cloud NGFW Product: PAN-OS Product: Prisma Access Category: Network devices

Description

An authentication bypass vulnerability in Palo Alto Networks PAN-OS® software enables an unauthenticated attacker with network access to bypass authentication controls when Cloud Authentication Service (CAS) is enabled.

The risk is higher if CAS is enabled on the management interface and lower when any other login interfaces are used.

The risk of this issue is greatly reduced if you secure access to the management web interface by restricting access to only trusted internal IP addresses according to our recommended best practice deployment guidelines https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431 .

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.

Affected products

VendorProductAffectedFixed
Palo Alto Networks Cloud NGFW — All
Palo Alto Networks PAN-OS 12.1.0 – < 12.1.7, 12.1.4-h5, 11.2.0 – < 11.2.12, 11.2.10-h6, 11.2.7-h13, 11.2.4-h17, 11.1.0 – < 11.1.15, 11.1.13-h5, 11.1.10-h25, 11.1.7-h6, 11.1.6-h32, 11.1.4-h33, 10.2.0 – < 10.2.18-h6, 10.2.16-h7, 10.2.13-h21, 10.2.10-h36, 10.2.7-h34 12.1.7, 12.1.4-h5
Palo Alto Networks Prisma Access — All

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

Metasploit 1 module

GitHub 2 repositories

  • BishopFox/CVE-2026-0265-check ★ 3 · May 22, 2026

    Safely detect whether a PAN-OS target is vulnerable to CVE-2026-0265.

  • tstephens1080/palo-alto-cve-2026-0265-checker ★ 0 · May 17, 2026

    Python script to sweep a fleet of Palo Alto firewalls and Panoramas via SSH, check PAN-OS version against CVE-2026-0265 (Authentication Bypass via Cloud Authentication Service), detect whether CAS is…

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 3

References