{"document":{"category":"csaf_vex","csaf_version":"2.1","notes":[{"category":"summary","text":"Palo Alto Networks PSIRT provided VEX document. This document is autogenerated.","title":"Cortex XDR Agent: Exceptional condition denial-of-service (DoS)"}],"publisher":{"category":"vendor","name":"Palo Alto Networks","namespace":"https://security.paloaltonetworks.com"},"title":"Palo Alto Networks PSIRT provided VEX document: CVE-2020-2020","distribution":{"text":"Copyright © 2024 Palo Alto Networks. All rights reserved.","tlp":{"label":"CLEAR","url":"https://www.first.org/tlp/"}},"tracking":{"current_release_date":"2026-04-11T00:25:12.604Z","generator":{"date":"2026-04-11T00:25:12.604Z","engine":{"name":"Vulnogram","version":"0.0.9"}},"id":"CVE-2020-2020","initial_release_date":"2020-12-09T17:00:00.000Z","revision_history":[{"number":"1","date":"2020-12-09T09:00:00.000Z","summary":"Initial publication"}],"status":"final","version":"1"}},"product_tree":{"branches":[{"name":"Palo Alto Networks","category":"vendor","branches":[]}]},"vulnerabilities":[{"cve":"CVE-2020-2020","product_status":{"fixed":["PANW-Cortex-XDR-Agent-134","PANW-Cortex-XDR-Agent-135","PANW-Cortex-XDR-Agent-136","PANW-Cortex-XDR-Agent-137"],"known_affected":["PANW-Cortex-XDR-Agent-134","PANW-Cortex-XDR-Agent-135","PANW-Cortex-XDR-Agent-136","PANW-Cortex-XDR-Agent-137"],"known_not_affected":["PANW-Cortex-XDR-Agent-138"]},"notes":[{"category":"description","text":"An improper handling of exceptional conditions vulnerability in Cortex XDR Agent allows a local authenticated Windows user to create files in the software's internal program directory that prevents the Cortex XDR Agent from starting. The exceptional condition is persistent and prevents Cortex XDR Agent from starting when the software or machine is restarted."}],"references":[{"category":"external","summary":"NVD - CVE-2020-2020","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-2020"},{"category":"self","summary":"Palo Alto Networks Security Advisory CVE-2020-2020","url":"https://security.paloaltonetworks.com/CVE-2020-2020"}],"threats":[{"category":"impact","description":"An improper handling of exceptional conditions vulnerability in Cortex XDR Agent allows a local authenticated Windows user to create files in the software's internal program directory that prevents the Cortex XDR Agent from starting. The exceptional condition is persistent and prevents Cortex XDR Agent from starting when the software or machine is restarted."}],"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":5.5,"baseSeverity":"MEDIUM"},"products":["PANW-Cortex-XDR-Agent-134","PANW-Cortex-XDR-Agent-135","PANW-Cortex-XDR-Agent-136","PANW-Cortex-XDR-Agent-137"]}]}]}