CVE-2026-33827

Timeline

Detection, updates, and resolution for this record.

1. Apr 14, 2026 · NIST NVD

   Detected

   Concurrent execution using shared resource with improper synchronization ('race condition') in Windows TCP/IP allows an unauthorized attacker to execute code over a network.

2. Oct 14, 2026 · NIST NVD

   Updated

   Concurrent execution using shared resource with improper synchronization ('race condition') in Windows TCP/IP allows an unauthorized attacker to execute code over a network.

Affected

• cpe microsoft/windows 10 1607version unspecified
• cpe microsoft/windows 10 1809version unspecified
• cpe microsoft/windows 10 21h2version unspecified
• cpe microsoft/windows 10 22h2version unspecified
• vendor Microsoft Windows 10 Version 1607version unspecified
• vendor Microsoft Windows 10 Version 1809version unspecified
• vendor Microsoft Windows 10 Version 21H2version unspecified
• vendor Microsoft Windows 10 Version 22H2version unspecified
• vendor Microsoft Windows 11 Version 23H2version unspecified
• vendor Microsoft Windows 11 Version 24H2version unspecified
• vendor Microsoft Windows 11 Version 25H2version unspecified
• vendor Microsoft Windows 11 version 23H2version unspecified

Sources

• CIRCL Vulnerability LookupCVE-2026-33827

  Concurrent execution using shared resource with improper synchronization ('race condition') in Windows TCP/IP allows an unauthorized attacker to execute code over a network.

  vulnerability.circl.lu
• CVE.orgCVE-2026-33827

  Official CVE identifier

  cve.org
• FIRST EPSSCVE-2026-33827

  30-day exploitation probability 0.5%

  first.org
• NIST NVDCVE-2026-33827

  Concurrent execution using shared resource with improper synchronization ('race condition') in Windows TCP/IP allows an unauthorized attacker to execute code over a network.

  nvd.nist.gov

References

• Vendor Advisory · msrc.microsoft.com