CVE-2026-21104

Heap-based buffer overflow in KnoxVault trustlet prior to SMR Sep-2026 Release 1 allows local privileged attackers to execute arbitrary code.

  • Published Sep 9, 2026
  • CVSS 7.1 high
  • 0.1% chance of exploitation in the next 30 days (EPSS)

Affected software

CVE-2026-21104 at the National Vulnerability Database