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    CVE-2026-0265

    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.

    Published:May 13, 2026
    Last Modified:Jun 9, 2026
    EPS:May 13, 2026
    EPSS Score:0.0005
    CVSS Score:2.7

    Affected Products

    Vendor
    Palo Alto Networks
    Product
    Cloud Ngfw
    Vendor
    Palo Alto Networks
    Product
    Pan-os
    Vendor
    Palo Alto Networks
    Product
    Prisma Access

    Exploits

    https://github.com/BishopFox/CVE-2026-0265-checkhttps://github.com/tstephens1080/palo-alto-cve-2026-0265-checker

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-463 Padding Oracle Crypto Attack
    CAPEC-475 Signature Spoofing by Improper Validation

    Related CVEs

    CVE-2026-0308 (CVSS 1.1) — A stored cross-site scripting (XSS) vulnerability in Palo Alto Networks PAN-OS® software enables a malicious a…
    CVE-2026-0309 (CVSS 4) — A command injection vulnerability in Palo Alto Networks PAN-OS® software enables an authenticated administrato…
    CVE-2026-0310 (CVSS 7.2) — A buffer overflow vulnerability in the XML processing functionality of Palo Alto Networks PAN-OS® software ena…
    CVE-2026-0301 (CVSS 1.7) — An information disclosure vulnerability in the URL Filtering feature of Palo Alto Networks PAN-OS® software en…
    CVE-2026-0279 (CVSS 1.3) — Multiple cross site scripting vulnerabilities in the User-ID™ Authentication Portal (aka Captive Portal) servi…
    CVE-2026-0280 (CVSS 1.7) — An IPv6 packet processing vulnerability in the dataplane of Palo Alto Networks PAN-OS® software enables an una…
    CVE-2026-0281 (CVSS 2.1) — An information disclosure vulnerability in Palo Alto Networks PAN-OS® software enables an unauthenticated atta…
    CVE-2026-0282 (CVSS 2.7) — A file deletion vulnerability in Palo Alto Networks PAN-OS® software enables an unauthenticated attacker with …
    CVE-2026-0283 (CVSS 4.5) — An authentication bypass vulnerability in Large Scale VPN ( LSVPN) functionality of Palo Alto Networks PAN-OS …
    CVE-2026-0284 (CVSS 4.7) — An XML injection vulnerability in the Large Scale VPN (LSVPN) functionality of Palo Alto Networks PAN-OS® soft…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High