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CISA Adds Two Known Exploited Vulnerabilities to Catalog

CISA alert of 28 October 2026 adding two vulnerabilities to the Known Exploited Vulnerabilities Catalog on evidence of active exploitation: CVE-2026-41709 (Broadcom VMware ESX insufficient logging) and CVE-2026-46300 (Linux kernel missing variable initialization). It restates BOD 26-04, which requires federal civilian agencies to prioritize fast remediation of KEV CVEs on exposed assets and to check for prior compromise. It also links the KEV nomination form.

TL;DR CISA adds an exploited VMware ESX logging flaw and a Linux kernel uninitialized-variable flaw to the KEV Catalog.

Organisations named here

  • BOD 26-04
  • CISA

CVEs named here

  • CVE-2026-41709
  • CVE-2026-46300

Technologies named here

  • Known Exploited Vulnerabilities Catalog
  • Binding Operational Directive 26-04
  • Linux kernel
  • CISA KEV
  • Broadcom VMWare ESX (CVE-2026-41709, Insufficient Logging Vulnerability)
  • KEV Nomination Form
  • VMware ESX

Techniques named here

  • Risk-based vulnerability management
  • Compromise check before patching