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2.1

Windows NT 3.51/4.0 may crash with many file locks

CVE-1999-1363 · published 26 years ago
Summary

On Windows NT 3.51 and 4.0, a locally‑run program can open a huge number of file locks, using up a pool of system memory and causing the computer to stop responding. This is a stability risk that can be triggered by any user with access to the machine. Install the latest Microsoft patches or upgrade to a newer Windows version to prevent the condition.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
microsoft windows_nt 3.5.1
4.0
cpe:2.3:o:microsoft:windows_nt:3.5.1:*:*:*:*:*:*:*
Original advisory text
Windows NT 3.51 and 4.0 allow local users to cause a denial of service (crash) by running a program that creates a large number of locks on a file, which exhausts the NonPagedPool.
Windows NT 3.51 and 4.0 allow local users to cause a denial of service (crash) by running a program that creates a large number of locks on a file, which exhausts the NonPagedPool.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker partial control (estimated)
Severity
2.1 Low
Exploitation
1% chance of attack within 30 days
Timeline
Published31 Dec 1999
Updated31 Oct 2026
First seen29 Sep 2026
Sources
CVE-1999-1363 · NVD
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