CVE-2026-33819 CRITICAL

CVE-2026-33819: Microsoft Bing Remote Code Execution Vulnerability

Vendor Microsoft
Product Microsoft Bing
Weakness CWE-502 · Unsafe deserialization
Published April 23, 2026
Last update June 1, 2026
View on NVD All CVEs

CVSS base score

10.0/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C

What the vulnerability does

01Description

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

Key dates

02Disclosure timeline

April 23, 2026 CVE published
June 1, 2026 Record updated