CVE-2024-38193: Microsoft Windows Ancillary Function Driver for WinSock Privilege Escalation Vulnerability

CVE-2024-38193 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2024-08-13

The Microsoft Windows Ancillary Function Driver (AFD) for WinSock contains a use-after-free vulnerability that allows a local attacker to escalate privileges to SYSTEM. The flaw is actively exploited in the wild and affects a wide range of Windows client and server operating systems.

Technologies: Microsoft Windows. Vendors: Microsoft.

Quick answers

Is CVE-2024-38193 exploited in the wild?
Yes. CVE-2024-38193 is known to be exploited in the wild, first recorded on 13 August 2024. Treat it as urgent.
How severe is CVE-2024-38193?
Critical severity, with a CVSS score of 7.8, published 13 August 2024.
Which products and versions are affected?
Microsoft Windows 10 1507, 1607, 1809, 21H2, 22H2; Microsoft Windows 11 21H2, 22H2, 23H2, 24H2; Microsoft Windows Server 2008 SP2, R2 SP1; Microsoft Windows Server 2012 Gold, R2; and 3 more.
Is there a fix for CVE-2024-38193?
A patch was published on 2024-08-13: Microsoft released security updates to address the vulnerability. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2024-38193 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2024-38193?
Check whether you run Microsoft Windows. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • Microsoft Windows 10 1507, 1607, 1809, 21H2, 22H2
  • Microsoft Windows 11 21H2, 22H2, 23H2, 24H2
  • Microsoft Windows Server 2008 SP2, R2 SP1
  • Microsoft Windows Server 2012 Gold, R2
  • Microsoft Windows Server 2016 All versions
  • Microsoft Windows Server 2019 All versions
  • Microsoft Windows Server 2022 All versions, 23H2

Timeline

  • 2024-08-13: disclosed
  • 2024-08-13: patched: Microsoft released security updates to address the vulnerability.
  • 2024-08-13: kev added: CISA added this vulnerability to the Known Exploited Vulnerabilities (KEV) catalog.
  • 2024-08-13: exploited: Reported as exploited in the wild at the time of disclosure.

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