{"document":{"category":"csaf_vex","csaf_version":"2.1","notes":[{"category":"summary","text":"Palo Alto Networks PSIRT provided VEX document. This document is autogenerated.","title":"PAN-OS: Authentication Bypass with Cloud Authentication Service (CAS) enabled"}],"publisher":{"category":"vendor","name":"Palo Alto Networks","namespace":"https://security.paloaltonetworks.com"},"title":"Palo Alto Networks PSIRT provided VEX document: CVE-2026-0265","distribution":{"text":"Copyright © 2024 Palo Alto Networks. All rights reserved.","tlp":{"label":"CLEAR","url":"https://www.first.org/tlp/"}},"tracking":{"current_release_date":"2026-05-13T21:55:49.188Z","generator":{"date":"2026-05-13T21:55:49.188Z","engine":{"name":"Vulnogram","version":"0.1.0-dev"}},"id":"CVE-2026-0265","initial_release_date":"2026-05-13T16:00:00.000Z","revision_history":[{"number":"1","date":"2026-05-13T09:00:00.000Z","summary":"Initial Publication."}],"status":"final","version":"1"}},"product_tree":{"branches":[{"name":"Palo Alto Networks","category":"vendor","branches":[{"name":"Cloud NGFW","category":"product_name","branches":[{"category":"product_version","name":"Cloud NGFW All","product":{"name":"Palo Alto Networks Cloud NGFW","product_id":"PANW-Cloud-NGFW-1"}}]},{"name":"PAN-OS","category":"product_name","branches":[{"category":"product_version_range","name":"vers:generic/PAN-OS>=12.1.0","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-724"}},{"category":"product_version_range","name":"vers:generic/PAN-OS>=12.1.4-h5","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-810"}},{"category":"product_version_range","name":"vers:generic/PAN-OS>=12.1.7","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-809"}},{"category":"product_version_range","name":"vers:generic/PAN-OS>=11.2.0","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-119"}},{"category":"product_version_range","name":"vers:generic/PAN-OS>=11.2.4-h17","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-814"}},{"category":"product_version_range","name":"vers:generic/PAN-OS>=11.2.7-h13","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-813"}},{"category":"product_version_range","name":"vers:generic/PAN-OS>=11.2.10-h6","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-812"}},{"category":"product_version_range","name":"vers:generic/PAN-OS>=11.2.12","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-811"}},{"category":"product_version_range","name":"vers:generic/PAN-OS>=11.1.0","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-120"}},{"category":"product_version_range","name":"vers:generic/PAN-OS>=11.1.4-h33","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-820"}},{"category":"product_version_range","name":"vers:generic/PAN-OS>=11.1.6-h32","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-819"}},{"category":"product_version_range","name":"vers:generic/PAN-OS>=11.1.7-h6","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-818"}},{"category":"product_version_range","name":"vers:generic/PAN-OS>=11.1.10-h25","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-817"}},{"category":"product_version_range","name":"vers:generic/PAN-OS>=11.1.13-h5","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-816"}},{"category":"product_version_range","name":"vers:generic/PAN-OS>=11.1.15","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-815"}},{"category":"product_version_range","name":"vers:generic/PAN-OS>=10.2.0","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-579"}},{"category":"product_version_range","name":"vers:generic/PAN-OS>=10.2.7-h34","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-825"}},{"category":"product_version_range","name":"vers:generic/PAN-OS>=10.2.10-h36","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-824"}},{"category":"product_version_range","name":"vers:generic/PAN-OS>=10.2.13-h21","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-823"}},{"category":"product_version_range","name":"vers:generic/PAN-OS>=10.2.16-h7","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-822"}},{"category":"product_version_range","name":"vers:generic/PAN-OS>=10.2.18-h6","product":{"name":"Palo Alto Networks PAN-OS","product_id":"PANW-PAN-OS-821"}}]},{"name":"Prisma Access","category":"product_name","branches":[{"category":"product_version","name":"Prisma Access All","product":{"name":"Palo Alto Networks Prisma Access","product_id":"PANW-Prisma-Access-1"}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-0265","product_status":{"fixed":["PANW-PAN-OS-810","PANW-PAN-OS-809","PANW-PAN-OS-814","PANW-PAN-OS-813","PANW-PAN-OS-812","PANW-PAN-OS-811","PANW-PAN-OS-820","PANW-PAN-OS-819","PANW-PAN-OS-818","PANW-PAN-OS-817","PANW-PAN-OS-816","PANW-PAN-OS-815","PANW-PAN-OS-825","PANW-PAN-OS-824","PANW-PAN-OS-823","PANW-PAN-OS-822","PANW-PAN-OS-821"],"known_affected":["PANW-PAN-OS-724","PANW-PAN-OS-119","PANW-PAN-OS-120","PANW-PAN-OS-579"],"known_not_affected":["PANW-Cloud-NGFW-1","PANW-Prisma-Access-1"]},"notes":[{"category":"description","text":"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.\n\nThe risk is higher if CAS is enabled on the management interface and lower when any other login interfaces are used.\n\nThe 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).\n\nThis issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series).\n\nCloud NGFW and Prisma Access® are not impacted by this vulnerability."}],"references":[{"category":"external","summary":"NVD - CVE-2026-0265","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-0265"},{"category":"self","summary":"Palo Alto Networks Security Advisory CVE-2026-0265","url":"https://security.paloaltonetworks.com/CVE-2026-0265"}],"threats":[{"category":"impact","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.\n\nThe risk is higher if CAS is enabled on the management interface and lower when any other login interfaces are used.\n\nThe 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).\n\nThis issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series).\n\nCloud NGFW and Prisma Access® are not impacted by this vulnerability."}],"scores":[{"cvss_v4":{"version":"4.0","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subAvailabilityImpact":"NONE","Safety":"NOT_DEFINED","Automatable":"NO","Recovery":"USER","valueDensity":"DIFFUSE","vulnerabilityResponseEffort":"MODERATE","providerUrgency":"RED","exploitMaturity":"UNREPORTED","baseSeverity":"CRITICAL","baseScore":9.2,"threatSeverity":"HIGH","threatScore":7.2,"vectorString":"CVSS: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:Red"},"products":["PANW-PAN-OS-724","PANW-PAN-OS-119","PANW-PAN-OS-120","PANW-PAN-OS-579"]},{"cvss_v4":{"version":"4.0","attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subAvailabilityImpact":"NONE","Safety":"NOT_DEFINED","Automatable":"NO","Recovery":"USER","valueDensity":"DIFFUSE","vulnerabilityResponseEffort":"MODERATE","providerUrgency":"AMBER","exploitMaturity":"UNREPORTED","baseSeverity":"HIGH","baseScore":7.5,"threatSeverity":"MEDIUM","threatScore":4.8,"vectorString":"CVSS: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:Amber"},"products":["PANW-PAN-OS-724","PANW-PAN-OS-119","PANW-PAN-OS-120","PANW-PAN-OS-579"]},{"cvss_v4":{"version":"4.0","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","subIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subAvailabilityImpact":"NONE","Safety":"NOT_DEFINED","Automatable":"NO","Recovery":"USER","valueDensity":"DIFFUSE","vulnerabilityResponseEffort":"MODERATE","providerUrgency":"AMBER","exploitMaturity":"UNREPORTED","baseSeverity":"HIGH","baseScore":7,"threatSeverity":"LOW","threatScore":2.7,"vectorString":"CVSS: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:Amber"},"products":["PANW-PAN-OS-724","PANW-PAN-OS-119","PANW-PAN-OS-120","PANW-PAN-OS-579"]}]}]}