CVE-2023-24938
Published: 14 June 2023
Summary
CVE-2023-24938 is a medium-severity NULL Pointer Dereference (CWE-476) vulnerability in Microsoft Windows 10 1809. Its CVSS base score is 6.5 (Medium).
Operationally, ranked in the top 10.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
Windows CryptoAPI contains a denial-of-service vulnerability tracked as CVE-2023-24938 and assigned CWE-476. The flaw resides in the Windows cryptographic API component and carries a CVSS 3.1 score of 6.5, reflecting network attack vector, low complexity, and low required privileges with high impact solely on availability.
An authenticated attacker with low privileges can send specially crafted network requests to trigger the flaw, resulting in a NULL pointer dereference that crashes the affected service and produces a denial-of-service condition without affecting confidentiality or integrity.
Microsoft has published remediation guidance in its Security Response Center advisory at the listed MSRC URL, which security practitioners should consult for patch availability and deployment instructions.
EPSS scores have remained low and stable near 0.05 with no material increase after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-28925
Vulnerability details
Windows CryptoAPI Denial of Service Vulnerability
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.