Cyber Resilience

CVE-2024-38193

Memory Safety in Microsoft Windows Server 2008 r2

CISA KEVActive ExploitationEUVD ExploitedPublic PoCMemory Safety
Published
13 August 2024
Modified
28 October 2025
KEV Added
13 August 2024
Patch / advisory
View advisory
CVSS Score v3.1 7.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.28 98th percentile
Risk Priority 83 floored blend · peak EPSS

Summary

CVE-2024-38193 is a high-severity Use After Free (CWE-416) vulnerability in Microsoft Windows Server 2008. Its CVSS base score is 7.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Client Execution (T1203); ranked in the top 2% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SA-8 (Security and Privacy Engineering Principles) — see the control section below for these in your framework.

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-2024-38193 is a use-after-free vulnerability (CWE-416) in the Windows Ancillary Function Driver for WinSock that permits local elevation of privilege. The flaw affects supported Windows systems and carries a CVSS 3.1 score of 7.8, reflecting local attack vector, low complexity, and low required privileges with high impact on confidentiality, integrity, and availability.

An authenticated local attacker can trigger the flaw to escalate privileges and obtain full control over the affected system. Public exploit code is available, and the vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild.

Microsoft’s security update guide provides official remediation details and patch availability, while CISA guidance emphasizes prompt application of vendor fixes for affected Windows installations.

The EPSS score reached a peak of 0.7519 and remains elevated at 0.7323, indicating sustained exploitation interest following disclosure.

EU & UK References

Vulnerability Data

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

CWE(s)
CWE-416NVD-CWE-noinfo
KEV Date Added
13 August 2024

Related Threats

MITRE ATT&CK Enterprise Techniques

T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
attack.mitre.org →
T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1210 Exploitation of Remote Services Lateral Movement
Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.
attack.mitre.org →
T1212 Exploitation for Credential Access Credential Access
Adversaries may exploit software vulnerabilities in an attempt to collect credentials.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2024-38107Same product: Microsoft Windows 10 1507both on KEV
CVE-2025-32701Same product: Microsoft Windows 10 1507both on KEV
CVE-2025-29824Same product: Microsoft Windows 10 1507both on KEV
CVE-2025-32709Same product: Microsoft Windows 10 1507both on KEV
CVE-2023-21674Same product: Microsoft Windows 10 1507both on KEV
CVE-2025-30400Same product: Microsoft Windows 10 1809both on KEV
CVE-2024-43556Same product: Microsoft Windows 10 1507
CVE-2024-43509Same product: Microsoft Windows 10 1507
CVE-2024-43599Same product: Microsoft Windows 10 1507
CVE-2024-38249Same product: Microsoft Windows 10 1507

Affected Assets

microsoft
windows 10 1507
≤ 10.0.10240.20751
microsoft
windows 10 1607
≤ 10.0.14393.7259
microsoft
windows 10 1809
≤ 10.0.17763.6189
microsoft
windows 10 21h2
≤ 10.0.19044.4780
microsoft
windows 10 22h2
≤ 10.0.19045.4780
microsoft
windows 11 21h2
≤ 10.0.22000.3147
microsoft
windows 11 22h2
≤ 10.0.22621.4037
microsoft
windows 11 23h2
≤ 10.0.22631.4037
microsoft
windows 11 24h2
≤ 10.0.26100.1457
microsoft
windows server 2008
all versions, r2
+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)
  • 3 hardening rules · 3 OS baselines
Validate
Prove the fix (OWASP ASVS)
  • V1.4.3

Mitigating Controls (NIST 800-53 r5) AI

SA-11 Developer Testing and Evaluation good match

Developer testing and evaluation can discover use-after-free bugs through dynamic analysis or fuzzing.

SA-8 Security and Privacy Engineering Principles partial match

Engineering principles can require memory-safe constructs or languages that structurally avoid introducing use-after-free.

SC-39 Process Isolation partial match

Process isolation confines the blast radius of use-after-free memory corruption to a single execution domain.

SI-16 Memory Protection partial match

Memory protection controls limit exploitation impact by blocking unauthorized code execution from dangling pointers.

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 mostly match
prevents

Secure SDLC practices directly incorporate memory-safety tooling and reviews that prevent most use-after-free defects.

ID.RA-01 partial match
prevents

Vulnerability identification processes can discover use-after-free issues via scanning or analysis but do not prevent their introduction.

PR.PS-02 partial match
prevents

Routine patching removes known use-after-free instances after they have been introduced in released software.

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.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development can detect use-after-free bugs before release.

A.8.25 Secure development life cycle partial match
prevents

Secure SDLC mandates memory-safety practices that reduce use-after-free defects.

A.8.26 Application security requirements partial match
prevents

Application security requirements can specify memory-management rules that mitigate use-after-free.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles include memory-safety design choices that limit use-after-free exposure.

A.8.28 Secure coding partial match
prevents

Secure coding standards directly prescribe avoidance of use-after-free patterns.

A.8.32 Change management partial match
prevents

Change-management processes help ensure memory-safety fixes are deployed consistently.

Hardening callouts derived

Configuration rules from DISA STIG baselines that bear on weaknesses of the type cited by this CVE. Each rule is shown with the relationship its mapping actually records, against the CWE it was authored against. Derived via CVE→CWE over `controls_xwalks` (authoritative rows only; rows rated `none` are excluded).

Oracle Linux 8 (1 rule)
  • V-248592 OL 8 must clear memory when it is freed to prevent use-after-free attacks. prevents CWE-416
RHEL 8 (1 rule)
  • V-230279 RHEL 8 must clear memory when it is freed to prevent use-after-free attacks. prevents CWE-416
RHEL 9 (1 rule)
  • V-257794 RHEL 9 must clear memory when it is freed to prevent use-after-free attacks. prevents CWE-416

References