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CVE record · CVE-2023-33163

Windows Network Load Balancing Remote Code Execution Vulnerability

CVSS 7.5 HighEPSS 0.0038 · 32nd percentile

Published by the CVE Program (CNA: microsoft) at 11 Jul 2023, 17:03 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
Microsoft Windows Server 2019
  • affected 10.0.17763.0 to before 10.0.17763.4645 custom
Microsoft Windows Server 2019 (Server Core installation)
  • affected 10.0.17763.0 to before 10.0.17763.4645 custom
Microsoft Windows Server 2022
  • affected 10.0.20348.0 to before 10.0.20348.1850 custom
Microsoft Windows Server 2016
  • affected 10.0.14393.0 to before 10.0.14393.6085 custom
Microsoft Windows Server 2016 (Server Core installation)
  • affected 10.0.14393.0 to before 10.0.14393.6085 custom
Microsoft Windows Server 2008 R2 Service Pack 1
  • affected 6.1.7601.0 to before 6.1.7601.26623 custom
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation)
  • affected 6.1.7601.0 to before 6.1.7601.26623 custom
Microsoft Windows Server 2012
  • affected 6.2.9200.0 to before 6.2.9200.24374 custom
Microsoft Windows Server 2012 (Server Core installation)
  • affected 6.2.9200.0 to before 6.2.9200.24374 custom
Microsoft Windows Server 2012 R2
  • affected 6.3.9600.0 to before 6.3.9600.21063 custom
Microsoft Windows Server 2012 R2 (Server Core installation)
  • affected 6.3.9600.0 to before 6.3.9600.21063 custom
Identifiers
CVE-2023-33163
CNA
microsoft
Weakness (CWE)
CWE-591
Tags
Published
11 Jul 2023
Updated
1 Jan 2025

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.5 High 3.1 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C CNA (microsoft)
  • CISA KEV Not listed.
  • EPSS 0.0038, the 32nd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 11 Jul 2023. New records show when each source confirmed them.

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.