CVE & CISA-KEV Catalog

CVE-2023-35633

HIGHEPSS 95th pctl
7.8
CVSS v3
NVD

Description

Windows Kernel Elevation of Privilege Vulnerability

How to fix

Remediation Available
Windows 10Windows
Install:KB5033379Microsoft
Windows Server 2008Windows
Install:KB5033422Microsoft
Install:KB5033427Microsoft
Windows Server 2008 R2Windows
Install:KB5033424Microsoft
Install:KB5033433Microsoft
Windows Server 2012Windows
Install:KB5033429Microsoft
Windows Server 2012 (Server Core installation)Windows
Install:KB5033429Microsoft
Windows Server 2012 R2Windows
Install:KB5033420Microsoft
Windows Server 2012 R2 (Server Core installation)Windows
Install:KB5033420Microsoft

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Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

8.70%probability of exploitation in 30 days
95thpercentile

High risk: more likely to be exploited than 95% of all known CVEs.

References

Related Vulnerabilities

Other CWE-59 (Link Following) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2022-30333High7.599%KEV + RansomFix
CVE-2021-21300High8.089%-Fix
CVE-2021-32610High7.173%-Fix
CVE-2020-36193High7.571%KEVFix
CVE-2023-40028Medium4.958%-Fix
CVE-2023-36874High7.843%KEVFix

Common questions

How do I fix CVE-2023-35633?

Published advisories record a fix for 7 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2023-35633 being actively exploited?

Not that we know of. CVE-2023-35633 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 8.7% is the estimated probability that it will be exploited in the next 30 days. That is higher than 95% of all scored CVEs.

How severe is CVE-2023-35633?

CVE-2023-35633 has a CVSS v3 base score of 7.8, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2023-35633 affect?

Published advisories record a fix for Windows 10 (Windows), Windows Server 2008 (Windows), Windows Server 2008 R2 (Windows), Windows Server 2012 (Windows), and 3 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-01-01.