High MSRC-CVE-2026-50696 1 CVE

Internet Key Exchange (IKE) Protocol Denial of Service Vulnerability

Published Jul 14, 2026 · Updated Oct 16, 2026 · Revision 6

Vendor: Microsoft

Summary

Impact: Denial of Service. Microsoft rating: Important. Not known to be exploited — Exploitation Unlikely. Customer action: Required.

Details

Security updates
10.0.17763.9020 — https://support.microsoft.com/help/5099538
10.0.20348.5386 — https://support.microsoft.com/help/5099540
10.0.19044.7548 — https://support.microsoft.com/help/5099539
10.0.26100.33158 — https://support.microsoft.com/help/5099536
10.0.26200.8875 — https://support.microsoft.com/help/5101650
10.0.22631.7376 — https://support.microsoft.com/help/5099414
10.0.28000.2525 — https://support.microsoft.com/help/5101649

Vulnerabilities 1

High 7.5

CVE-2026-50696

Internet Key Exchange (IKE) Protocol Denial of Service Vulnerability

Heap-based buffer overflow in Windows Internet Key Exchange (IKE) Protocol allows an unauthorized attacker to deny service over a network.

Microsoft Windows Server 2019 Windows Server 2019 (Server Core installation) Windows 10 Version 1809 Windows

Jul 14, 2026

Revision history

2026-10-16 #6
Updated an acknowledgement. This is an informational change only.
2026-10-09 #5
Updated an acknowledgement. This is an informational change only.
2026-09-15 #4
Updated an acknowledgement. This is an informational change only.
2026-09-08 #3
Acknowledgement Updated
2026-08-20 #2
Updated an acknowledgement. This is an informational change only.
2026-07-14 #1
Information published.

References

CVE-2026-50696 Internet Key Exchange (IKE) Protocol Denial of Service Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50696
Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
Common Vulnerability Scoring System
https://www.first.org/cvss