CVE-2026-33819: Microsoft Bing

Critical severity, CVSS 9.8. EPSS: 1.5% chance of exploitation in the next 30 days.

Deserialization of untrusted data in Microsoft Bing allows an unauthorized attacker to execute code over a network.

Affected products

• Microsoft Bing: affected versions not specified

Published 2026-04-23. Last modified 2026-06-17.