{"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: Heap-Based Buffer Overflow in DNS Proxy and DNS Server Allows Unauthenticated Remote Code Execution"}],"publisher":{"category":"vendor","name":"Palo Alto Networks","namespace":"https://security.paloaltonetworks.com"},"title":"Palo Alto Networks PSIRT provided VEX document: CVE-2026-0264","distribution":{"text":"Copyright © 2024 Palo Alto Networks. All rights reserved.","tlp":{"label":"CLEAR","url":"https://www.first.org/tlp/"}},"tracking":{"current_release_date":"2026-05-13T21:55:12.202Z","generator":{"date":"2026-05-13T21:55:12.202Z","engine":{"name":"Vulnogram","version":"0.1.0-dev"}},"id":"CVE-2026-0264","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-2026-0264","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":"A buffer overflow vulnerability in the DNS proxy and DNS Server features of Palo Alto Networks PAN-OS® Software allows an unauthenticated attacker with network access to cause a denial of service (DoS) condition (all PAN-OS platforms except Cloud NGFW and Prisma Access) or potentially execute arbitrary code by sending specially crafted network traffic (PA-Series hardware only).\n\n\nPanorama, Cloud NGFW, and Prisma® Access are not impacted by this vulnerability."}],"references":[{"category":"external","summary":"NVD - CVE-2026-0264","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-0264"},{"category":"self","summary":"Palo Alto Networks Security Advisory CVE-2026-0264","url":"https://security.paloaltonetworks.com/CVE-2026-0264"}],"threats":[{"category":"impact","description":"A buffer overflow vulnerability in the DNS proxy and DNS Server features of Palo Alto Networks PAN-OS® Software allows an unauthenticated attacker with network access to cause a denial of service (DoS) condition (all PAN-OS platforms except Cloud NGFW and Prisma Access) or potentially execute arbitrary code by sending specially crafted network traffic (PA-Series hardware only).\n\n\nPanorama, Cloud NGFW, and Prisma® Access are not impacted by this vulnerability."}],"scores":[{"cvss_v4":{"version":"4.0","attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","subConfidentialityImpact":"LOW","vulnIntegrityImpact":"HIGH","subIntegrityImpact":"LOW","vulnAvailabilityImpact":"HIGH","subAvailabilityImpact":"NONE","Safety":"NOT_DEFINED","Automatable":"YES","Recovery":"USER","valueDensity":"CONCENTRATED","vulnerabilityResponseEffort":"HIGH","providerUrgency":"RED","exploitMaturity":"UNREPORTED","baseSeverity":"CRITICAL","baseScore":9.2,"threatSeverity":"HIGH","threatScore":7.2,"vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N/E:U/AU:Y/R:U/V:C/RE:H/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":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subAvailabilityImpact":"NONE","Safety":"NOT_DEFINED","Automatable":"YES","Recovery":"AUTOMATIC","valueDensity":"DIFFUSE","vulnerabilityResponseEffort":"MODERATE","providerUrgency":"AMBER","exploitMaturity":"UNREPORTED","baseSeverity":"HIGH","baseScore":8.7,"threatSeverity":"MEDIUM","threatScore":6.6,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/AU:Y/R:A/V:D/RE:M/U:Amber"},"products":["PANW-PAN-OS-724","PANW-PAN-OS-119","PANW-PAN-OS-120","PANW-PAN-OS-579"]}]}]}