{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2026-20009", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-20009", "idYear": 2026, "status": "PUBLISHED", "publishedAt": "2026-03-04T17:06:58.606Z", "updatedAt": "2026-03-05T15:49:42.424Z", "importedAt": "2026-10-24T01:57:55.771Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "Cisco Secure Firewall Adaptive Security Appliance SSH Partial Private Key Authentication Bypass Vulnerability", "summary": "A vulnerability in the implementation of the proprietary SSH stack with SSH key-based authentication in Cisco Secure Firewall Adaptive Security Appliance (ASA) Software could allow an unauthenticated, remote attacker to log in to a Cisco Secure Firewall ASA device and execute commands as a specific user.\r\n\r\nThis vulnerability is due to insufficient validation of user input during the SSH authentication phase. An attacker could exploit this vulnerability by submitting crafted input during SSH authentication to an affected device. A successful exploit could allow the attacker to log in to the device as a specific user without the private SSH key of that user. To exploit this vulnerability, the attacker must possess a valid username and the associated public key. The private key is not required.\r\nNotes:\r\n\r\nExploitation of this vulnerability does not provide the attacker with root access.\r\nThe authentication, authorization, and accounting (AAA) configuration command auto-enable is not affected by this vulnerability.  ", "affected": [ { "vendor": "Cisco", "product": "Cisco Secure Firewall Adaptive Security Appliance (ASA) Software", "defaultStatus": "unknown", "versions": [ { "version": "9.17.1", "status": "affected" }, { "version": "9.17.1.7", "status": "affected" }, { "version": "9.17.1.9", "status": "affected" }, { "version": "9.17.1.10", "status": "affected" }, { "version": "9.18.1", "status": "affected" }, { "version": "9.18.1.3", "status": "affected" }, { "version": "9.17.1.11", "status": "affected" }, { "version": "9.18.2", "status": "affected" }, { "version": "9.17.1.13", "status": "affected" }, { "version": "9.17.1.15", "status": "affected" }, { "version": "9.18.2.5", "status": "affected" }, { "version": "9.17.1.20", "status": "affected" }, { "version": "9.18.2.7", "status": "affected" }, { "version": "9.19.1", "status": "affected" }, { "version": "9.18.2.8", "status": "affected" }, { "version": "9.18.3", "status": "affected" }, { "version": "9.19.1.5", "status": "affected" }, { "version": "9.17.1.30", "status": "affected" }, { "version": "9.19.1.9", "status": "affected" }, { "version": "9.18.3.39", "status": "affected" }, { "version": "9.19.1.12", "status": "affected" }, { "version": "9.18.3.46", "status": "affected" }, { "version": "9.19.1.18", "status": "affected" }, { "version": "9.18.3.53", "status": "affected" }, { "version": "9.18.3.55", "status": "affected" }, { "version": "9.17.1.33", "status": "affected" }, { "version": "9.18.3.56", "status": "affected" }, { "version": "9.20.1", "status": "affected" }, { "version": "9.19.1.22", "status": "affected" }, { "version": "9.18.4", "status": "affected" }, { "version": "9.20.1.5", "status": "affected" }, { "version": "9.18.4.5", "status": "affected" }, { "version": "9.19.1.24", "status": "affected" }, { "version": "9.18.4.8", "status": "affected" }, { "version": "9.20.2", "status": "affected" }, { "version": "9.19.1.27", "status": "affected" }, { "version": "9.18.4.22", "status": "affected" }, { "version": "9.20.2.10", "status": "affected" }, { "version": "9.19.1.28", "status": "affected" }, { "version": "9.17.1.39", "status": "affected" }, { "version": "9.18.4.24", "status": "affected" }, { "version": "9.20.2.21", "status": "affected" }, { "version": "9.19.1.31", "status": "affected" }, { "version": "9.18.4.29", "status": "affected" }, { "version": "9.20.2.22", "status": "affected" }, { "version": "9.18.4.34", "status": "affected" }, { "version": "9.20.3", "status": "affected" }, { "version": "9.18.4.40", "status": "affected" }, { "version": "9.23.1", "status": "affected" }, { "version": "9.22.1.1", "status": "affected" }, { "version": "9.20.3.4", "status": "affected" }, { "version": "9.18.4.47", "status": "affected" }, { "version": "9.20.3.7", "status": "affected" }, { "version": "9.17.1.45", "status": "affected" }, { "version": "9.19.1.37", "status": "affected" }, { "version": "9.17.1.46", "status": "affected" }, { "version": "9.20.3.9", "status": "affected" }, { "version": "9.19.1.38", "status": "affected" }, { "version": "9.18.4.50", "status": "affected" }, { "version": "9.22.1.3", "status": "affected" }, { "version": "9.20.3.10", "status": "affected" }, { "version": "9.22.1.2", "status": "affected" }, { "version": "9.18.4.52", "status": "affected" }, { "version": "9.20.3.13", "status": "affected" }, { "version": "9.22.1.6", "status": "affected" }, { "version": "9.18.4.53", "status": "affected" }, { "version": "9.22.2", "status": "affected" }, { "version": "9.20.3.16", "status": "affected" }, { "version": "9.19.1.42", "status": "affected" }, { "version": "9.18.4.57", "status": "affected" }, { "version": "9.23.1.3", "status": "affected" }, { "version": "9.20.3.20", "status": "affected" }, { "version": "9.22.2.4", "status": "affected" }, { "version": "9.23.1.7", "status": "affected" }, { "version": "9.20.4", "status": "affected" }, { "version": "9.22.2.9", "status": "affected" }, { "version": "9.23.1.13", "status": "affected" }, { "version": "9.20.4.7", "status": "affected" }, { "version": "9.22.2.13", "status": "affected" }, { "version": "9.18.4.66", "status": "affected" }, { "version": "9.18.4.67", "status": "affected" }, { "version": "9.18.4.68", "status": "affected" } ] } ] } } }