CVE-2026-0265 PAN-OS: Authentication Bypass with Cloud Authentication Service (CAS) enabled
Unauthenticated attackers can bypass authentication on PAN-OS firewalls when Cloud Authentication Service is enabled, particularly on the management interface.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-0265?
CVE-2026-0265 is a high-severity authentication bypass vulnerability in Paloaltonetworks Pan-Os, published on 13 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-347
Which versions are affected by CVE-2026-0265?
It affects 2 products.
Products include Paloaltonetworks Pan-Os, Siemens Ruggedcom Ape1808 Firmware.
How do I fix CVE-2026-0265?
No fix has been published for CVE-2026-0265 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-0265 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-0265 exists.
Public exploit code: 1 Metasploit module and 2 proofs of concept on GitHub.
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-qcp7-r34x-6gv6.