CVE-2026-59309 Critical · 9.8 EPSS 0.6%
vCenter authentication-bypass vulnerability
VMware · Cloud Foundation
Official description · CVE.org
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.
Priority scorePatchfirst’s 0 to 100 ranking. It adds points for CISA KEV listing, ransomware use, EPSS, threat reports, public exploit code and CVSS. Every CVE page shows the breakdown. Breakdown
64.7 / 100
- Exploited
- Yes, in VulnCheck KEV
- Reports
- 0
- Tactics
- 0/15
Exploitation timelineDated milestones for a CVE: when it was disclosed, when exploit code became public, when exploitation was confirmed, and when threat reports named it.
First seen exploited 15 days after disclosure.
- Disclosedday 0
- First seen exploitedVulnCheck KEV evidence+15 days
MITRE ATT&CKA public catalogue of the techniques attackers use, maintained by MITRE. Patchfirst uses it to describe what attackers do with a vulnerability. techniques
No techniques linkedNo ATT&CK techniques are linked to this CVE yet. MITRE CTID has not mapped it, and no report passage in the corpus ties it to a technique.
What security researchers reported
Not named in any threat report yetAlso mentioned in 20 community threat pulses (AlienVault OTX)
Weaker evidencePulses are indicator collections that anyone can publish. A mention is not confirmation of exploitation.
- VMware vCenter CVE-2026-59310 exploitation: APT campaign and ransomware use12 Oct 2026
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- PaperCut NG/MF Unauth RCE Chain CVE-2026-81578 + CVE-2026-8207829 Aug 2026
- Next.js Critical RCE: CVE-2026-75604 Windows Path Traversal + AVIF/libheif Overflow28 Aug 2026
- miniOrange WordPress SAML Auth Bypass (CVE-2026-15981 / CVE-2026-61979) Active Scanning28 Aug 2026
- Gitea CVE-2026-60004 RCE Actively Exploited (KEV) — Miner-like Payload27 Aug 2026
- 14 more on OTX