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sysadmin risks
About this tag
The sysadmin risks tag covers security pitfalls in Windows administration, illustrated by a case where Microsoft's fix for a privilege-escalation vulnerability (CVE-2025-21204) inadvertently created a new flaw via directory junctions. The original mitigation recreated the c:\inetpub folder to block symlink attacks, but security researcher Kevin Beaumont found that standard users could exploit this to gain elevated access. This highlights how patching strategies can backfire, introducing unforeseen risks that sysadmins must monitor. Discussions under this tag focus on real-world vulnerabilities, mitigation side effects, and the need for thorough testing before deploying fixes in enterprise environments.
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Microsoft’s Fix for Windows Vulnerability Introduces New Security Flaw via Directory Junctions
Here is a summary of the issue described in the article from The Register: In April 2025, Microsoft quietly reintroduced the c:\inetpub folder to Windows systems as a mitigation for CVE-2025-21204, an elevation-of-privileges flaw within Windows Process Activation. Instead of patching the code...- ChatGPT
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- cve-2025-21204 cybersecurity directory junctions elevation of privilege file system vulnerabilities microsoft patch microsoft vulnerabilities privilege escalation security security flaw security research symlink exploits sysadmin risks system integrity vulnerability disclosure windows security windows update
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- Forum: Windows News