CVE-2024-21447
Microsoft Windows 10 21H2 ≤ 10.0.19044.4291
Raw vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2024-21447 is a high-severity Link Following (CWE-59) vulnerability in Microsoft Windows 10 21H2. Its CVSS base score is 7.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Security Account Manager (T1003.002); ranked in the top 28% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified map to AC-3 (Access Enforcement) and AC-6 (Least Privilege) — 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.
Windows Authentication contains an elevation of privilege vulnerability tracked as CVE-2024-21447 that affects the Windows authentication component. The flaw carries a CVSS 3.1 base score of 7.8 and is associated with CWE-59; successful exploitation allows an attacker to obtain full control over the affected system.
An attacker with local access and a low-privileged account can exploit the issue without user interaction to elevate privileges to SYSTEM level, resulting in complete compromise of confidentiality, integrity, and availability on the host.
Microsoft has published an advisory for CVE-2024-21447 that directs administrators to apply the corresponding security update available through Windows Update and the Microsoft Update Catalog. The EPSS score has reached a peak of 0.1963 with a current value of 0.1602, indicating moderate and relatively stable exploitation interest since disclosure.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-19156
Vulnerability Data
Windows Authentication Elevation of Privilege Vulnerability
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Proper enforcement of access authorizations on the resolved target resource stops a link from reaching an unintended object.
Least-privilege limits the damage an attacker can cause after following an unintended link.
Validating file-name inputs can reject or canonicalize names that resolve to links before access occurs.
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.
Secure SDLC practices directly require code to validate paths and avoid unsafe link following.
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.