CVE-2023-28218
Published: 11 April 2023
Summary
CVE-2023-28218 is a high-severity Heap-based Buffer Overflow (CWE-122) vulnerability in Microsoft Windows Server 2008. Its CVSS base score is 7.0 (High).
Operationally, ranked in the top 3.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
The vulnerability CVE-2023-28218 is an elevation of privilege flaw in the Windows Ancillary Function Driver for WinSock, carrying a CVSS 3.1 score of 7.0 with the vector AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H and linked to CWE-122. It affects the WinSock driver component within Windows operating systems.
A local attacker already holding low-privileged access on a system can exploit the issue to obtain high privileges over confidentiality, integrity, and availability, although successful exploitation requires high attack complexity and no user interaction.
Microsoft has published mitigation details and patch information for this vulnerability in its security update guide at the referenced MSRC advisory URL.
The associated EPSS score stands at 0.3040 with no indicated rise from a lower baseline.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-31926
Vulnerability details
Windows Ancillary Function Driver for WinSock Elevation of Privilege 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.