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CVE-2023-21554

CVE

Threat entity extracted from intelligence sources

Frequency
1
occurrences
First Seen
December 15, 2025
Last Seen
December 15, 2025
API
Exploited in Wild
Ransomware Use
Public Exploits
Attack Vector

Vulnerability Overview

Exploitation Activity

Exploitation Intelligence

Microsoft has confirmed that the December 2025 security updates are causing failures in Message Queuing (MSMQ) functionality, impacting enterprise applications and Internet Information Services (IIS) websites. The issue affects systems running Windows 10 22H2, Windows Server 2019, and Windows Server...

Public Exploits

Checking GitHub for proof-of-concept code…