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Update Summary

VMware ESXi 8.0 Update 3k (build 25595708) is a live-patchable security release that resolves CVE-2026-47876. It is a security-only image and references VMSA-2026-0006.

Update Details

Security

  • Resolves CVE-2026-47876.
  • Security-only image with critical severity bulletin ESXi_8.0.3-0.102.25595708.
  • Live-patchable release; use Live Patch only for clusters managed with vSphere Lifecycle Manager images.

New Features

  • Live patch support for this ESXi security update.

Known Issues

  • If you use an RSA key size smaller than 2048 bits, RSA signature generation fails.
  • VMware Host Client may show severity event descriptions that differ from IPMI or Lenovo XClarity Controller.
  • vSphere Lifecycle Manager remediation on ESXi hosts with DPUs may intermittently fail after reboot due to a post-remediation scan timeout.

Hints

  • The ESXi and esx-update bulletins are dependent on each other; include both in a single host patch baseline or include the rollup bulletin to avoid patching failures.
  • Host reboot and VM migration or shutdown are required for vSphere Update Manager-based installation.
  • Download bundle: VMware-ESXi-8.0U3k-25595708-depot.zip.
  • For authenticated online and offline download details, see KBs 390121, 390098, and 389276.

Links

Product Information

Vendor: VMware

Product: ESXi

Product type: Other

Platform: x86_64

Version: ESXi 8.0 U3k - 25595708

Vendor release date: Jul 29, 2026

Original release notes: View on vendor site

Published on updatealert.io: Jul 29, 2026

Description: Enterprise hypervisor for running virtual machines on server hardware.