{"id":"CVE-2026-59309","published":"2026-07-30T12:19:52Z","modified":"2026-07-30T15:08:05Z","title":"vCenter authentication-bypass vulnerability","vendor":"VMware","product":"Cloud Foundation","tier":"core","eol":null,"affectedVersions":[{"vendor":"VMware","product":"Cloud Foundation","versions":["9.1.x.x","9.0.x.x","5.x"]},{"vendor":"VMware","product":"vSphere Foundation","versions":["9.1.x.x","9.0.x.x"]},{"vendor":"VMware","product":"vCenter","versions":[">= 9.1.x.x, < 9.1.0.0300",">= 9.0.x.x, < 9.0.2.0100",">= 8.0, < 8.0 U3k"]},{"vendor":"VMware","product":"Telco Cloud Infrastructure","versions":["3.0"]},{"vendor":"VMware","product":"Telco Cloud Platform","versions":["5.1.x","5.0.x","4.x","3.0"]}],"description":{"text":"VMware vCenter contains an authentication bypass vulnerability in the VMware Directory Service. A malicious actor with network access to vCenter may exploit this issue to bypass authentication and gain unauthorized access to the system.","provenance":"source","from":"CVE.org"},"summary":null,"cvss":{"score":9.8,"severity":"CRITICAL","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.00611,"percentile":0.49206,"date":"2026-10-30","provenance":"source"},"kev":null,"vulncheckKev":{"dateAdded":"2026-08-14","exploitedFirstSeen":"2026-08-14","ransomware":false,"evidence":[{"url":"https://medium.com/@quirso_de/global-exploitation-of-cve-2026-59310-by-suspected-chinese-nexus-apt-related-cve-2026-59309-443a79e1466d","date":"2026-08-14"}],"evidenceTotal":1,"provenance":"source"},"exploited":true,"otx":{"pulseCount":20,"pulses":[{"name":"VMware vCenter CVE-2026-59310 exploitation: APT campaign and ransomware use","url":"https://otx.alienvault.com/pulse/6accfca1321aed4c859e24f4","created":"2026-10-12"},{"name":"ServiceNow AI Platform CVSS 10.0 Unauth Code Injection, Access Control, and SQLi (Aug 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CVE-2026-32475 Unauth PHP Upload RCE","url":"https://otx.alienvault.com/pulse/6a8bdf16b6e0f7552e8ec5ce","created":"2026-08-24"},{"name":"CISA KEV Aug 2026: macOS Screen Sharing, SharePoint JWT Bypass, vCenter RCE, Windows IKE RCE","url":"https://otx.alienvault.com/pulse/6a8698d6f3a813d7e3d0e396","created":"2026-08-20"},{"name":"China-Nexus APT Exploits vCenter CVE-2026-59310/59309 — Babuk-Derived ESXi Ransomware","url":"https://otx.alienvault.com/pulse/6a83f61f30c822a02ff5c8b6","created":"2026-08-18"}],"provenance":"machine"},"cwes":[{"id":"CWE-303","name":"Incorrect Implementation of Authentication Algorithm"}],"references":[{"url":"https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/38017","tags":[]}],"techniques":[],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2026-51098","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-51098","exploited":false,"exploitedSince":null,"provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[],"timeline":[{"date":"2026-07-30","kind":"published","label":"Published (CVE.org)","url":"https://www.cve.org/CVERecord?id=CVE-2026-59309","provenance":"source"},{"date":"2026-08-14","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://medium.com/@quirso_de/global-exploitation-of-cve-2026-59310-by-suspected-chinese-nexus-apt-related-cve-2026-59309-443a79e1466d","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":null},"priority":{"score":64.7,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in VulnCheck KEV"},{"name":"Recent KEV listing","points":10.0,"detail":"added 78 days ago"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":9.84,"detail":"percentile 0.4921"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":0.0,"detail":"none found"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"20 pulses"},{"name":"CVSS severity","points":6.86,"detail":"base score 9.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}