CVE-2026-69356

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.

  • Published Sep 8, 2026
  • CVSS 9.3 critical
  • 0.8% chance of exploitation in the next 30 days (EPSS)
  • A fix is available

Affected software

CVE-2026-69356 at the National Vulnerability Database