CVE-2023-21774 | Windows Kernel Elevation of Privilege Vulnerability

Windows Kernel Elevation of Privilege Vulnerability

Published: 2023-01-10 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-21774 is rated Moderate Risk (60.5/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.97%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-21774

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-02-15 1.74% 1.97% +0.22%
2 2026-02-11 0.93% 1.74% +0.81%
3 2026-01-28 — 0.93% —

Full EPSS history (24 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-21774

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 [email protected]

Weakness enumeration for CVE-2023-21774

Affected software / configurations for CVE-2023-21774

Vendor Product Version Raw CPE
microsoft windows_10_1607 — cpe:2.3:o:microsoft:windows_10_1607:-:*:*:*:*:*:x64:*
microsoft windows_10_1607 — cpe:2.3:o:microsoft:windows_10_1607:-:*:*:*:*:*:x86:*
microsoft windows_10_1809 — cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:arm64:*
microsoft windows_10_1809 — cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x64:*
microsoft windows_10_1809 — cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:x86:*
microsoft windows_10_20h2 — cpe:2.3:o:microsoft:windows_10_20h2:-:*:*:*:*:*:arm64:*
microsoft windows_10_20h2 — cpe:2.3:o:microsoft:windows_10_20h2:-:*:*:*:*:*:x64:*
microsoft windows_10_20h2 — cpe:2.3:o:microsoft:windows_10_20h2:-:*:*:*:*:*:x86:*
microsoft windows_10_21h2 — cpe:2.3:o:microsoft:windows_10_21h2:-:*:*:*:*:*:arm64:*
microsoft windows_10_21h2 — cpe:2.3:o:microsoft:windows_10_21h2:-:*:*:*:*:*:x64:*
microsoft windows_10_21h2 — cpe:2.3:o:microsoft:windows_10_21h2:-:*:*:*:*:*:x86:*
microsoft windows_10_22h2 — cpe:2.3:o:microsoft:windows_10_22h2:-:*:*:*:*:*:arm64:*
microsoft windows_10_22h2 — cpe:2.3:o:microsoft:windows_10_22h2:-:*:*:*:*:*:x64:*
microsoft windows_10_22h2 — cpe:2.3:o:microsoft:windows_10_22h2:-:*:*:*:*:*:x86:*
microsoft windows_11_21h2 — cpe:2.3:o:microsoft:windows_11_21h2:-:*:*:*:*:*:arm64:*
microsoft windows_11_21h2 — cpe:2.3:o:microsoft:windows_11_21h2:-:*:*:*:*:*:x64:*
microsoft windows_11_22h2 — cpe:2.3:o:microsoft:windows_11_22h2:-:*:*:*:*:*:arm64:*
microsoft windows_11_22h2 — cpe:2.3:o:microsoft:windows_11_22h2:-:*:*:*:*:*:x64:*
microsoft windows_7 — cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:x64:*
microsoft windows_7 — cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:x86:*
microsoft windows_8.1 — cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:x64:*
microsoft windows_8.1 — cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:x86:*
microsoft windows_rt_8.1 — cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*
microsoft windows_server_2008 — cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x64:*
microsoft windows_server_2008 — cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x86:*
microsoft windows_server_2008 r2 cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
microsoft windows_server_2012 — cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
microsoft windows_server_2012 r2 cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
microsoft windows_server_2016 — cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*
microsoft windows_server_2019 — cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
microsoft windows_server_2022 — cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:*:*:*:*

References for CVE-2023-21774

cvelogic Threat Intelligence