Security Resilience

CVE-2023-32084

Memory Safety in Microsoft Windows 10 1809 ≤ 10.0.17763.4645

Published
11 July 2023
Modified
21 November 2024
Patch / advisory
CVSS Score v3.1 7.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.018 78th percentile
Risk Priority 64 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-2023-32084 is a high-severity NULL Pointer Dereference (CWE-476) vulnerability in Microsoft Windows 10 1809. Its CVSS base score is 7.5 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique OS Credential Dumping (T1003); ranked in the top 22% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2023-32084 is a denial of service vulnerability affecting HTTP.sys, the kernel-mode device driver that processes HTTP requests on Windows systems. It carries a CVSS 3.1 base score of 7.5 and is associated with CWE-476.

Remote unauthenticated attackers can exploit the flaw over the network with low attack complexity to trigger a denial of service, resulting in high impact to availability while leaving confidentiality and integrity unaffected.

Microsoft has published guidance on the vulnerability through its Security Response Center at the referenced advisory URL. The EPSS score has remained low and stable, with a current value of 0.0543 and a peak of 0.0573.

OWASP Top 10 for Web (2025)

EU & UK References

Vulnerability Data

HTTP.sys Denial of Service Vulnerability

CWE(s)

Related Threats

MITRE ATT&CK Enterprise Techniques

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.
T1003.007 Proc Filesystem Credential Access
Adversaries may gather credentials from the proc filesystem or `/proc`.
T1006 Direct Volume Access Stealth
Adversaries may directly access a volume to bypass file access controls and file system monitoring.
T1011 Exfiltration Over Other Network Medium Exfiltration
Adversaries may attempt to exfiltrate data over a different network medium than the command and control channel.
T1012 Query Registry Discovery
Adversaries may interact with the Windows Registry to gather information about the system, configuration, and installed software.
T1016 System Network Configuration Discovery Discovery
Adversaries may look for details about the network configuration and settings, such as IP and/or MAC addresses, of systems they access or through information discovery of remote systems.
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-24938Same product: Microsoft Windows 10 1809
CVE-2023-36603Same product: Microsoft Windows 10 1809
CVE-2024-26219Same product: Microsoft Windows 10 1809
CVE-2023-36709Same product: Microsoft Windows 10 1809
CVE-2023-32008Same product: Microsoft Windows 10 1809
CVE-2023-36602Same product: Microsoft Windows 10 1809
CVE-2023-24859Same product: Microsoft Windows 10 1809
CVE-2023-35338Same product: Microsoft Windows 10 1809
CVE-2024-43559Same product: Microsoft Windows 10 1809
CVE-2023-21683Same product: Microsoft Windows 10 1809

Affected Assets

microsoft
windows 10 1809
≤ 10.0.17763.4645
microsoft
windows 11 21h2
≤ 10.0.22000.2176
microsoft
windows 11 22h2
≤ 10.0.22621.1992
microsoft
windows server 2019
all versions
microsoft
windows server 2022
all versions

Mitigating Controls

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 (static analysis, code review, safe coding standards) directly prevent NULL dereference bugs during development.

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.

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References