Network denial of service via null dereference
Published Sep 8, 2026 · Updated Sep 9, 2026
A null pointer dereference in Microsoft Windows IKE Extension allows remote attackers to interrupt service over a network. Microsoft has not disclosed the triggering IKE message, affected code path, or the operation that produces the null pointer. No authentication or user interaction is required; Microsoft reports availability loss only but does not specify whether the service or system stops.
Summary
What happened
A null pointer dereference in Microsoft Windows IKE Extension allows remote attackers to interrupt service over a network. Microsoft has not disclosed the triggering IKE message, affected code path, or the operation that produces the null pointer. No authentication or user interaction is required; Microsoft reports availability loss only but does not specify whether the service or system stops.
The record
- CVE
- CVE-2026-69881
- Published
- Sep 8, 2026
- Updated
- Sep 9, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-476, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 8, 2026CVE publishedPublication date reported by the CVE source.
- Sep 9, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.0.17763.0 <10.0.17763.9245
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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