CVE-2026-66323

Improper neutralization of parameter/argument delimiters in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.

  • Published Aug 28, 2026
  • CVSS 5.4 medium
  • 0.4% chance of exploitation in the next 30 days (EPSS)

Affected software

CVE-2026-66323 at the National Vulnerability Database