PatchTheCVECVE-2024-38193: Microsoft Windows Ancillary Function Driver for WinSock Privilege Escalation Vulnerability
87
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HIGH 7.8EXPLOITEDWATCHLISTUPGRADEUPGRADEUPGRADE
CVE-2024-38193 is a high-severity flaw (CVSS 7.8) affecting windows 10 1507, windows 10 1607, windows 10 1809, reported as exploited in the wild. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Why this priority
- High severity
- EPSS top 2%: very likely to be exploited
- Exploited in the wild (CISA KEV)
- Public exploit reference
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.8 (High) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 28.7% (top 2%) |
| CISA exploited list | Yes, fix due 2024-09-03 |
| Weakness | CWE-416 |
| Published | 2024-08-13 |
| Last modified | 2026-06-17 |
Publisher (CNA): Microsoft Corporation · Vendor: microsoft
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Exploited Added to the CISA Known Exploited Vulnerabilities list
- Published CVE record published
- Deadline CISA due date for US federal agencies to patch
- Updated Record last modified
microsoft windows 10 1507 UPGRADE
Affected: < 10.0.10240.20751
Fixed in: 10.0.10240.20751
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
microsoft windows 10 1607 UPGRADE
Affected: < 10.0.14393.7259
Fixed in: 10.0.14393.7259
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
microsoft windows 10 1809 UPGRADE
Affected: < 10.0.17763.6189
Fixed in: 10.0.17763.6189
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
microsoft windows 10 21h2 UPGRADE
Affected: < 10.0.19044.4780
Fixed in: 10.0.19044.4780
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
microsoft windows 10 22h2 UPGRADE
Affected: < 10.0.19045.4780
Fixed in: 10.0.19045.4780
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
microsoft windows 11 21h2 UPGRADE
Affected: < 10.0.22000.3147
Fixed in: 10.0.22000.3147
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Exact fixes by distribution
Fedora ELN · gram_grep · FIXED · 0.10.4-1.eln159 · FEDORA-2026-0808475f2a · source
sudo dnf upgrade --advisory=FEDORA-2026-0808475f2a
Fedora 46 · wesnoth · FIXED · 1.19.29-1.fc46 · FEDORA-2026-58f458e24e · source
sudo dnf upgrade --advisory=FEDORA-2026-58f458e24e
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- GitHub PoC: killvxk/CVE-2024-38193-Nephster (61 stars)
- Exploit-DB: Microsoft Windows 11 Pro 23H2 - Ancillary Function Driver for WinSock Privilege Escalation
Verify at the official source NVD · CVE Program · CISA KEV catalog · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2024-38193?
windows 10 1507: upgrade to 10.0.10240.20751; windows 10 1607: upgrade to 10.0.14393.7259; windows 10 1809: upgrade to 10.0.17763.6189. Exact commands for each OS are on this page.
Is CVE-2024-38193 being exploited?
Yes. CVE-2024-38193 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.
What does CVE-2024-38193 affect?
CVE-2024-38193 affects windows 10 1507, windows 10 1607, windows 10 1809. Severity is high (CVSS 7.8). Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
How urgent is CVE-2024-38193?
Priority 87/100. High severity; EPSS top 2%: very likely to be exploited; Exploited in the wild (CISA KEV); Public exploit reference; On your watchlist
Software pages
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