CVE-2026-81387

Exposure of sensitive system information to an unauthorized control sphere in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.

  • Published Sep 8, 2026
  • CVSS 5.5 medium
  • 0.6% chance of exploitation in the next 30 days (EPSS)
  • A fix is available

Affected software

CVE-2026-81387 at the National Vulnerability Database