Security Resilience

CVE-2023-29363

Memory Safety in Microsoft Windows 10 1809 ≤ 10.0.17763.4499

Memory Safety
Published
14 June 2023
Modified
08 April 2025
Patch / advisory
View advisory
CVSS Score v3.1 9.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.019 80th percentile
Risk Priority 78 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-2023-29363 is a critical-severity Heap-based Buffer Overflow (CWE-122) vulnerability in Microsoft Windows 10 1809. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Data Obfuscation (T1001); ranked in the top 20% 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-2023-29363 is a remote code execution vulnerability in the Windows Pragmatic General Multicast (PGM) component. It carries a CVSS 3.1 score of 9.8 and is associated with CWE-122. The flaw permits unauthenticated network-based attacks that can result in complete confidentiality, integrity, and availability impacts on affected Windows systems.

An attacker can exploit the vulnerability over the network without credentials or user interaction to execute arbitrary code with the privileges of the vulnerable process, enabling full system compromise.

Microsoft security advisories addressing the issue are published at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-29363. The EPSS score for this CVE has remained low, moving only from 0.0556 to a peak of 0.0586.

EU & UK References

Vulnerability Data

Windows Pragmatic General Multicast (PGM) Remote Code Execution Vulnerability

CWE(s)
CWE-122NVD-CWE-noinfo

Related Threats

MITRE ATT&CK Enterprise Techniques

T1001 Data Obfuscation Command And Control
Adversaries may obfuscate command and control traffic to make it more difficult to detect.
attack.mitre.org →
T1001.002 Steganography Command And Control
Adversaries may use steganographic techniques to hide command and control traffic to make detection efforts more difficult.
attack.mitre.org →
T1003.001 LSASS Memory Credential Access
Adversaries may attempt to access credential material stored in the process memory of the Local Security Authority Subsystem Service (LSASS).
attack.mitre.org →
T1003.004 LSA Secrets Credential Access
Adversaries with SYSTEM access to a host may attempt to access Local Security Authority (LSA) secrets, which can contain a variety of different credential materials, such as credentials for service accounts.
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 →
T1006 Direct Volume Access Stealth
Adversaries may directly access a volume to bypass file access controls and file system monitoring.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-38143Same product: Microsoft Windows 10 1507
CVE-2023-29372Same product: Microsoft Windows 10 1507
CVE-2023-24943Same product: Microsoft Windows 10 1507
CVE-2023-28275Same product: Microsoft Windows 10 1507
CVE-2023-28218Same product: Microsoft Windows 10 1507
CVE-2023-36402Same product: Microsoft Windows 10 1507
CVE-2023-21690Same product: Microsoft Windows 10 1507
CVE-2023-24912Same product: Microsoft Windows 10 1507
CVE-2023-21689Same product: Microsoft Windows 10 1507
CVE-2023-23415Same product: Microsoft Windows 10 1507

Affected Assets

microsoft
windows 10 1507
≤ 10.0.10240.19983 · ≤ 10.0.10240.19983
microsoft
windows 10 1607
≤ 10.0.14393.5989 · ≤ 10.0.14393.5989
microsoft
windows 10 1809
≤ 10.0.17763.4499 · ≤ 10.0.17763.4499 · ≤ 10.0.17763.4499
microsoft
windows 10 21h2
≤ 10.0.19044.3086
microsoft
windows 10 22h2
≤ 10.0.19045.3087
microsoft
windows 11 21h2
≤ 10.0.22000.2057
microsoft
windows 11 22h2
≤ 10.0.22621.1848
microsoft
windows server 2008
all versions, r2
microsoft
windows server 2012
all versions, r2
microsoft
windows server 2016
≤ 10.0.14393.5989
+2 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)
  • V1.4.1

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.

ID.RA-01 partial match
blocks

Vulnerability scanning and recording can discover heap-overflow flaws but does not prevent their introduction in code.

PR.PS-02 partial match
blocks

Timely patching removes known heap-overflow instances after they exist.

PR.PS-06 partial match
blocks

Secure-development practices directly require bounds checking and safe memory handling that prevent heap overflows.

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

References