{ "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-2026-20182", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-20182", "idYear": 2026, "status": "PUBLISHED", "publishedAt": "2026-05-14T16:08:25.566Z", "updatedAt": "2026-06-16T17:57:59.048Z", "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 Catalyst SD-WAN Controller Authentication Bypass Vulnerability", "summary": "May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and fixed after the was disclosed in February 2026. This new advisory is for a new vulnerability in the control connection handshaking. The section of this advisory includes Show Control Connections guidance to help with system checks. \r\n\r\nA vulnerability in the peering authentication in Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, and Cisco Catalyst SD-WAN Validator, formerly SD-WAN vBond, could allow an unauthenticated, remote attacker to bypass authentication and obtain administrative privileges on an affected system.\r\nThis vulnerability exists because the peering authentication mechanism in an affected system is not working properly. An attacker could exploit this vulnerability by sending crafted requests to the affected system. A successful exploit could allow the attacker to log in to an affected Cisco Catalyst SD-WAN Controller as an internal, high-privileged, non-root user account. Using this account, the attacker could access NETCONF, which would then allow the attacker to manipulate network configuration for the SD-WAN fabric.", "affected": [ { "vendor": "Cisco", "product": "Cisco Catalyst SD-WAN Controller", "defaultStatus": "unknown", "versions": [ { "version": "20.6.4", "status": "affected" }, { "version": "20.9.2", "status": "affected" }, { "version": "20.3.6", "status": "affected" }, { "version": "20.7.2", "status": "affected" }, { "version": "20.7.1", "status": "affected" }, { "version": "20.5.1", "status": "affected" }, { "version": "20.6.2", "status": "affected" }, { "version": "19.3.0", "status": "affected" }, { "version": "20.6.1", "status": "affected" }, { "version": "17.2.4", "status": "affected" }, { "version": "18.2.0", "status": "affected" }, { "version": "18.4.6", "status": "affected" }, { "version": "19.1.0", "status": "affected" }, { "version": "19.2.4", "status": "affected" }, { "version": "19.2.929", "status": "affected" }, { "version": "18.3.8", "status": "affected" }, { "version": "18.4.303", "status": "affected" }, { "version": "18.3.7", "status": "affected" }, { "version": "18.4.1", "status": "affected" }, { "version": "19.2.097", "status": "affected" }, { "version": "19.2.0", "status": "affected" }, { "version": "19.2.099", "status": "affected" }, { "version": "18.3.6", "status": "affected" }, { "version": "20.4.2", "status": "affected" }, { "version": "19.0.0", "status": "affected" }, { "version": "20.9.1", "status": "affected" }, { "version": "20.3.5", "status": "affected" }, { "version": "20.3.1", "status": "affected" }, { "version": "18.3.5", "status": "affected" }, { "version": "20.6.3", "status": "affected" }, { "version": "18.4.3", "status": "affected" }, { "version": "18.4.4", "status": "affected" }, { "version": "18.3.3", "status": "affected" }, { "version": "17.2.8", "status": "affected" }, { "version": "20.8.1", "status": "affected" }, { "version": "19.2.32", "status": "affected" }, { "version": "19.2.2", "status": "affected" }, { "version": "17.2.5", "status": "affected" }, { "version": "18.4.0", "status": "affected" }, { "version": "20.4.1.1", "status": "affected" }, { "version": "20.1.3", "status": "affected" }, { "version": "20.1.2", "status": "affected" }, { "version": "17.2.10", "status": "affected" }, { "version": "19.2.098", "status": "affected" }, { "version": "20.1.1", "status": "affected" }, { "version": "17.2.6", "status": "affected" }, { "version": "19.2.1", "status": "affected" }, { "version": "18.3.4", "status": "affected" }, { "version": "20.4.1", "status": "affected" }, { "version": "17.2.9", "status": "affected" }, { "version": "19.2.31", "status": "affected" }, { "version": "19.0.1a", "status": "affected" }, { "version": "18.3.0", "status": "affected" }, { "version": "17.2.7", "status": "affected" }, { "version": "18.4.5", "status": "affected" }, { "version": "20.3.4", "status": "affected" }, { "version": "20.3.3", "status": "affected" }, { "version": "20.4.1.2", "status": "affected" }, { "version": "20.3.2", "status": "affected" }, { "version": "18.3.1", "status": "affected" }, { "version": "20.1.12", "status": "affected" }, { "version": "19.2.3", "status": "affected" }, { "version": "20.10.1", "status": "affected" }, { "version": "20.6.5", "status": "affected" }, { "version": "20.3.7", "status": "affected" }, { "version": "20.9.3", "status": "affected" }, { "version": "20.11.1", "status": "affected" }, { "version": "20.6.3.2", "status": "affected" }, { "version": "20.4.2.3", "status": "affected" }, { "version": "20.3.5.1", "status": "affected" }, { "version": "20.3.4.3", "status": "affected" }, { "version": "20.9.3.1", "status": "affected" }, { "version": "20.6.4.1", "status": "affected" }, { "version": "20.3.3.2", "status": "affected" }, { "version": "20.6.5.2", "status": "affected" }, { "version": "20.3.7.1", "status": "affected" }, { "version": "20.11.1.1", "status": "affected" }, { "version": "20.10.1.1", "status": "affected" }, { "version": "20.6.1.2", "status": "affected" }, { "version": "20.1.3.1", "status": "affected" }, { "version": "20.9.2.2", "status": "affected" }, { "version": "20.6.5.3", "status": "affected" }, { "version": "20.6.3.3", "status": "affected" }, { "version": "20.3.7.2", "status": "affected" }, { "version": "20.6.5.4", "status": "affected" }, { "version": "20.9.2.3", "status": "affected" }, { "version": "20.9.4", "status": "affected" }, { "version": "20.12.1", "status": "affected" }, { "version": "20.3.8", "status": "affected" }, { "version": "20.6.6", "status": "affected" }, { "version": "20.12.2", "status": "affected" }, { "version": "20.13.1", "status": "affected" }, { "version": "20.9.5", "status": "affected" }, { "version": "20.12.3", "status": "affected" }, { "version": "20.6.7", "status": "affected" }, { "version": "20.9.5.1", "status": "affected" }, { "version": "20.14.1", "status": "affected" }, { "version": "20.12.3.1", "status": "affected" }, { "version": "20.12.4", "status": "affected" }, { "version": "20.15.1", "status": "affected" }, { "version": "20.9.6", "status": "affected" }, { "version": "20.6.8", "status": "affected" }, { "version": "20.16.1", "status": "affected" }, { "version": "20.9.5.3", "status": "affected" }, { "version": "20.12.4.1", "status": "affected" }, { "version": "20.15.2", "status": "affected" }, { "version": "20.12.5", "status": "affected" }, { "version": "20.9.7", "status": "affected" }, { "version": "20.15.3", "status": "affected" }, { "version": "20.12.5.1", "status": "affected" }, { "version": "20.12.5.2", "status": "affected" }, { "version": "20.15.4", "status": "affected" }, { "version": "20.9.7.1", "status": "affected" }, { "version": "20.12.6", "status": "affected" }, { "version": "20.9.8", "status": "affected" }, { "version": "20.15.4.1", "status": "affected" }, { "version": "20.15.4.2", "status": "affected" }, { "version": "20.12.5.3", "status": "affected" }, { "version": "20.12.6.1", "status": "affected" }, { "version": "20.9.8.2", "status": "affected" }, { "version": "20.15.5", "status": "affected" }, { "version": "20.12.7", "status": "affected" }, { "version": "20.9.9", "status": "affected" }, { "version": "20.15.5.1", "status": "affected" }, { "version": "20.15.4.3", "status": "affected" }, { "version": "20.15.4.5", "status": "affected" }, { "version": "20.15.5.3", "status": "affected" }, { "version": "20.12.7.2", "status": "affected" }, { "version": "20.9.9.2", "status": "affected" } ] }, { "vendor": "Cisco", "product": "Cisco Catalyst SD-WAN Manager", "defaultStatus": "unknown", "versions": [ { "version": "20.1.12", "status": "affected" }, { "version": "19.2.1", "status": "affected" }, { "version": "18.4.4", "status": "affected" }, { "version": "18.4.5", "status": "affected" }, { "version": "20.1.1.1", "status": "affected" }, { "version": "20.1.1", "status": "affected" }, { "version": "19.2.099", "status": "affected" }, { "version": "18.3.6", "status": "affected" }, { "version": "18.3.7", "status": "affected" }, { "version": "19.2.0", "status": "affected" }, { "version": "19.1.0", "status": "affected" }, { "version": "18.4.303", "status": "affected" }, { "version": "19.2.098", "status": "affected" }, { "version": "18.3.6.1", "status": "affected" }, { "version": "18.2.0", "status": "affected" }, { "version": "17.2.8", "status": "affected" }, { "version": "18.3.3.1", "status": "affected" }, { "version": "18.4.0", "status": "affected" }, { "version": "18.3.1", "status": "affected" }, { "version": "17.2.6", "status": "affected" }, { "version": "17.2.9", "status": "affected" }, { "version": "17.2.5", "status": "affected" }, { "version": "18.4.0.1", "status": "affected" }, { "version": "18.3.3", "status": "affected" }, { "version": "18.3.0", "status": "affected" }, { "version": "19.2.3", "status": "affected" }, { "version": "18.4.501_ES", "status": "affected" }, { "version": "20.1.2", "status": "affected" }, { "version": "19.2.929", "status": "affected" }, { "version": "19.2.31", "status": "affected" }, { "version": "20.3.2", "status": "affected" }, { "version": "19.2.4", "status": "affected" }, { "version": "19.2.4.0.9", "status": "affected" }, { "version": "20.1.3.1", "status": "affected" } ] } ] } } }