CVE-2025-21355 HIGH

CVE-2025-21355: Microsoft Bing Remote Code Execution Vulnerability

Vendor Microsoft
Product Microsoft Bing
Weakness CWE-306 · Missing auth
Published February 19, 2025
Last update February 13, 2026
View on NVD All CVEs

CVSS base score

8.6/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Missing Authentication for Critical Function in Microsoft Bing allows an unauthorized attacker to execute code over a network

Key dates

02Disclosure timeline

February 19, 2025 CVE published
February 13, 2026 Record updated