Security Alert: Microsoft Patch Updates addressing 81 vulnerabilities
- November 21, 2025
- Posted by: Chernor Jalloh
- Categories:
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Microsoft has released security updates addressing 81 vulnerabilities, including two zero-day flaws under active exploitation.
Key risks:
• SMB Elevation of Privilege (CVE-2025-55234)
• Newtonsoft.Json DoS (CVE-2024-21907)
• Critical RCE & EoP in Windows, Office, Hyper-V
Immediate patching is strongly recommended to reduce exposure.
Read our full advisory with detailed analysis and guidance here: https://nccc.gov.sl/Alerts_Advisories/