VMware ESXi ↗
Summary iPlain-English security verdict for VMware ESXi, generated from its current health score, actively-exploited vulnerabilities, and latest supported version.
VMware ESXi currently scores 85/100 — good. 8 actively-exploited vulnerabilities (CISA KEV) affect older releases (e.g. CVE-2019-5544) — staying on the latest supported version keeps you clear of them. The latest supported release is 9.1.0.0. It's largely safe; apply minor updates as they appear. Note: this product is assessed at the product level on recent (365-day) activity rather than an exact per-version match, so it is never marked a confident "healthy".
Disclosure trend iNew CVEs published for VMware ESXi each year (NVD). A higher bar means more disclosures that year — more scrutiny, not necessarily less safe.
4 of its known vulnerabilities are linked to ransomware campaigns (CISA KEV).
Patch priority — what to act on iThe issues to fix first — actively exploited (CISA KEV) first, then by exploitation probability (EPSS), then severity. Each row's "→ fixed in" is the earliest version that patches it; "see advisory" means no fixed version is published.
Most urgent first — actively exploited, then likeliest to be exploited.
CVE-2019-5544 CRITICAL exploited ransomware Out-of-bounds write EPSS 97% → see advisory CVE-2020-3992 CRITICAL exploited ransomware Use-after-free EPSS 83% → see advisory CVE-2023-29552 HIGH exploited EPSS 66% → fixed in 7.0 CVE-2024-37085 MEDIUM exploited ransomware Improper authentication EPSS 27% → see advisory CVE-2010-3904 HIGH exploited CWE-1284 EPSS 11% → see advisory CVE-2025-22226 HIGH exploited Out-of-bounds read EPSS 2% → see advisory CVE-2025-22224 CRITICAL exploited CWE-367 EPSS 2% → see advisory CVE-2025-22225 HIGH exploited ransomware Out-of-bounds write EPSS 1% → see advisory CVE-2017-5753 MEDIUM CWE-203 EPSS 94% → see advisory CVE-2021-21974 HIGH Out-of-bounds write EPSS 45% → see advisory CVE-2010-0211 CRITICAL CWE-252 EPSS 29% → see advisory CVE-2024-22252 CRITICAL Use-after-free EPSS 4% → see advisorySee all 116 known VMware ESXi CVEs & security history →
How to patch VMware ESXi — step-by-step to the latest secure version →
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Versions & lifecycle iWhen each release line stops receiving security patches (end-of-life). After EOL there are no more fixes — plan upgrades before these dates.
How long each VMware ESXi release line is supported — and when it sunsets.
Full VMware ESXi end-of-life dates & support timeline →
Frequently asked
Is VMware ESXi safe and patched?
VMware ESXi currently scores 85/100 — good. 8 actively-exploited vulnerabilities (CISA KEV) affect older releases (e.g. CVE-2019-5544) — staying on the latest supported version keeps you clear of them. The latest supported release is 9.1.0.0. It's largely safe; apply minor updates as they appear. Note: this product is assessed at the product level on recent (365-day) activity rather than an exact per-version match, so it is never marked a confident "healthy".
What should I do about VMware ESXi now?
Upgrade VMware ESXi to the latest supported release (9.1.0.0) or later, which clears the actively-exploited issues affecting older versions, then confirm against VMware / Broadcom's official advisory.
When does VMware ESXi reach end-of-life?
The latest supported VMware ESXi release is 9.1.0.0. After end-of-life a release no longer receives security patches.
Which versions of VMware ESXi are still receiving security updates?
Supported VMware ESXi release lines (latest 9.1.0.0): 9.1, 9.0, 8.0. End-of-life releases no longer receive security patches.
product-level posture (last 365d); exact per-version verdict pending precise version mapping
Informational only, from public data (NVD · CISA KEV · EPSS · endoflife.date), and can lag or miss vendor-specific fixes. Always confirm against VMware / Broadcom's official advisory before you patch or upgrade — VMware ESXi official site ↗