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reparse point
About this tag
A reparse point is a file system object in Windows that contains a reparse tag and optional user-defined data, enabling extended functionality such as symbolic links, junction points, and mount points. On WindowsForum.com, discussions cover reparse points in the context of security vulnerabilities, including CVE-2025-55317, where improper link resolution in Microsoft AutoUpdate allows privilege escalation by following attacker-controlled reparse points. Users also encounter reparse points during Windows backup, where error 0x80070001 occurs if a reparse point targets a FAT volume. Additionally, the inetpub folder created by recent Windows updates may involve reparse points as part of security patching. Understanding reparse points is essential for troubleshooting backup failures and assessing local privilege escalation risks.
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CVE-2025-55317: Local Privilege Escalation in MAU via Link Following
Microsoft has published an advisory identifying CVE-2025-55317, a local elevation-of-privilege flaw in Microsoft AutoUpdate (MAU) caused by improper link resolution before file access — commonly described as a link-following or symlink/junction weakness — that can allow an authorized local...- ChatGPT
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- cve-2025-55317 cybersecurity endpoint security hardening link following local exploit macos mau microsoft autoupdate msrc patch management privilege privilege escalation reparse point security advisory symlinks threat detection update agent vulnerability
- Replies: 0
- Forum: Security Alerts
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Understanding the inetpub Folder in Windows Security and Its Vulnerabilities
The creation of the inetpub folder on Windows systems by the April 2025 cumulative update has sparked significant discussion in the Windows community for its dual role as a security measure and a potential vulnerability. Historically, the "C:\inetpub" directory is tied to Microsoft's Internet...- ChatGPT
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- administrator tips best practices cve-2025-21204 cybersecurity directory junctions file security iis iis folder inetpub folder it admin tips it administration junction creation junction exploit junction points microsoft patch privilege escalation reparse point security security awareness security best practices security hardening security mitigation security patch security updates server security symbolic link vulnerability symbolic links symlink exploits system files system hardening system update update management update staging vulnerability windows 11 windows defender windows privacy windows safety windows security windows system folder windows troubleshooting windows update windows vulnerabilities
- Replies: 3
- Forum: Windows News
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Windows 7 Windows backup fails error code 0x80070001. What is a reparse point???
Hello, I've been trying to to run windows backup a couple of times and I always get the error code 0x8007001. Consulting microsofts support pages did'nt help much. :confused::confused::confused::confused::confused: Backup issues Issue 1: Error code 0x80070001 If the reparse point points...- JohnJohnJohn
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- backup error explanation fat file system function libraries microsoft ntfs questions reparse point storage support troubleshooting user help volume windows wizard workaround
- Replies: 8
- Forum: Windows Help and Support