Riskcovery

CVE-2026-0265

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

State
Published
Severity
7.2 High
Published
May 13, 2026
Updated
Oct 15, 2026
Reserved
Nov 3, 2025

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
4.07.2 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Redpalo_alto
4.04.8 MediumCVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amberpalo_alto
4.02.7 LowCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amberpalo_alto

Weaknesses

  • CWE-347 Improper Verification of Cryptographic Signature

Affected Products

ProductVersions
Cloud NGFWPalo Alto Networks
  • AllNot affected
PAN-OSPalo Alto Networks
  • 12.1.0 to before 12.1.7, 12.1.4-h5Affectedfrom 12.1.4-h5Not affectedfrom 12.1.7Not affected
  • 11.2.0 to before 11.2.12, 11.2.10-h6, 11.2.7-h13, 11.2.4-h17Affectedfrom 11.2.4-h17Not affectedfrom 11.2.7-h13Not affectedfrom 11.2.10-h6Not affectedfrom 11.2.12Not affected
  • 11.1.0 to before 11.1.15, 11.1.13-h5, 11.1.10-h25, 11.1.7-h6, 11.1.6-h32, 11.1.4-h33Affectedfrom 11.1.4-h33Not affectedfrom 11.1.6-h32Not affectedfrom 11.1.7-h6Not affectedfrom 11.1.10-h25Not affectedfrom 11.1.13-h5Not affectedfrom 11.1.15Not affected
  • 10.2.0 to before 10.2.18-h6, 10.2.16-h7, 10.2.13-h21, 10.2.10-h36, 10.2.7-h34Affectedfrom 10.2.7-h34Not affectedfrom 10.2.10-h36Not affectedfrom 10.2.13-h21Not affectedfrom 10.2.16-h7Not affectedfrom 10.2.18-h6Not affected
Prisma AccessPalo Alto Networks
  • AllNot affected

References

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