CVE-2025-21355

HIGH

Microsoft Bing - Unauthenticated Remote Code Execution

Title source: llm

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

Core 1

Core References

Patch, Vendor Advisory vendor-advisory patch

CVSS v3 8.6

EPSS 0.0696

EPSS Percentile 91.5%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Vulnrichment

Exploitation none

Automatable yes

Technical Impact total

CWE

CWE-306

Status published

Products (1)

microsoft/bing

Published Feb 19, 2025

Tracked Since Feb 18, 2026