CVE-2023-21675

Memory Safety in Microsoft Windows 10 1809

Memory Safety

Published

10 January 2023

Modified

21 November 2024

CVSS Score v3.1 7.8

Click a component to see what it means

Raw vector

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

EPSS Score 0.0083 57th percentile

Risk Priority 59 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2023-21675 is a high-severity Type Confusion (CWE-843) vulnerability in Microsoft Windows 10 1809. Its CVSS base score is 7.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Junk Data (T1001.001); ranked in the top 43% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2023-25842

Vulnerability Data

Windows Kernel Elevation of Privilege Vulnerability

CWE(s): CWE-843 NVD-CWE-noinfo

Related Threats

MITRE ATT&CK Enterprise Techniques

T1001.001 Junk Data Command And Control

Adversaries may add junk data to protocols used for command and control to make detection more difficult.

attack.mitre.org →

T1003 OS Credential Dumping Credential Access

Adversaries may attempt to dump credentials to obtain account login and credential material, normally in the form of a hash or a clear text password.

attack.mitre.org →

T1003.005 Cached Domain Credentials Credential Access

Adversaries may attempt to access cached domain credentials used to allow authentication to occur in the event a domain controller is unavailable.

attack.mitre.org →

T1003.006 DCSync Credential Access

Adversaries may attempt to access credentials and other sensitive information by abusing a Windows Domain Controller's application programming interface (API)(Citation: Microsoft DRSR Dec 2017) (Citation: Microsoft GetNCCChanges) (Citati…

attack.mitre.org →

T1005 Data from Local System Collection

Adversaries may search local system sources, such as file systems, configuration files, local databases, virtual machine files, or process memory, to find files of interest and sensitive data prior to Exfiltration.

attack.mitre.org →

T1011.001 Exfiltration Over Bluetooth Exfiltration

Adversaries may attempt to exfiltrate data over Bluetooth rather than the command and control channel.

attack.mitre.org →

Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2022-41033Same product: Microsoft Windows 10 1607

CVE-2023-36578Same product: Microsoft Windows 10 1607

CVE-2023-28243Same product: Microsoft Windows 10 1607

CVE-2023-24929Same product: Microsoft Windows 10 1607

CVE-2023-24927Same product: Microsoft Windows 10 1607

CVE-2023-24885Same product: Microsoft Windows 10 1607

CVE-2023-35297Same product: Microsoft Windows 10 1607

CVE-2024-21363Same product: Microsoft Windows 10 1607

CVE-2024-20678Same product: Microsoft Windows 10 1607

CVE-2024-26232Same product: Microsoft Windows 10 1607

Affected Assets

microsoft

windows 10 1607

all versions

microsoft

windows 10 1809

all versions

microsoft

windows 10 20h2

all versions

microsoft

windows 10 21h2

all versions

microsoft

windows 10 22h2

all versions

microsoft

windows 11 21h2

all versions

microsoft

windows 11 22h2

all versions

microsoft

windows 7

all versions

microsoft

windows 8.1

all versions

microsoft

windows rt 8.1

all versions

+5 more product configuration(s) — see NVD for full list

Mitigating Controls

Control response

Prevent

Stop it (NIST 800-53)

—

Detect

Catch it (NIST detect / respond)

—

Harden

Shrink the surface (DISA STIG)

—

Validate

Prove the fix (OWASP ASVS)

V1.5.2
V15.3.5

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 partial match

blocks

Secure SDLC practices directly prevent type-confusion flaws via safe typing, static analysis, and code review while the control itself addresses many additional weaknesses.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.5.14 Information transfer partial match

removes

A.5.15 Access control partial match

removes

A.5.16 Identity management partial match

removes

A.5.17 Authentication information partial match

removes

A.5.18 Access rights partial match

removes

A.8.10 Information deletion partial match

removes