CVE-2026-20818: CWE-532: Insertion of Sensitive Information into Log File in Microsoft Windows Server 2016
Insertion of sensitive information into log file in Windows Kernel allows an unauthorized attacker to disclose information locally.
AI Analysis
Technical Summary
This vulnerability involves the insertion of sensitive information into log files by the Windows Kernel in Microsoft Windows Server 2016 (version 10.0.14393.0). The flaw allows an unauthorized local attacker to access sensitive information through these logs. The vulnerability is tracked as CWE-532 (Insertion of Sensitive Information into Log File). Microsoft has published an official fix to remediate this issue.
Potential Impact
An unauthorized local attacker can disclose sensitive information by exploiting the improper logging behavior in the Windows Kernel. This could lead to information disclosure without requiring elevated privileges or user interaction. There is no indication of impact on integrity or availability.
Mitigation Recommendations
An official fix is available from Microsoft. It is recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20818 to remediate this vulnerability.
CVE-2026-20818: CWE-532: Insertion of Sensitive Information into Log File in Microsoft Windows Server 2016
Description
Insertion of sensitive information into log file in Windows Kernel allows an unauthorized attacker to disclose information locally.
CVSS v3.1
Score 6.2medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves the insertion of sensitive information into log files by the Windows Kernel in Microsoft Windows Server 2016 (version 10.0.14393.0). The flaw allows an unauthorized local attacker to access sensitive information through these logs. The vulnerability is tracked as CWE-532 (Insertion of Sensitive Information into Log File). Microsoft has published an official fix to remediate this issue.
Potential Impact
An unauthorized local attacker can disclose sensitive information by exploiting the improper logging behavior in the Windows Kernel. This could lead to information disclosure without requiring elevated privileges or user interaction. There is no indication of impact on integrity or availability.
Mitigation Recommendations
An official fix is available from Microsoft. It is recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20818 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-03T05:54:20.373Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20818","vendor":"Microsoft"}]
Threat ID: 69668adba60475309f9adf94
Added to database: 01/13/2026, 18:11:39 UTC
Last enriched: 07/30/2026, 23:55:56 UTC
Last updated: 09/10/2026, 19:36:52 UTC
Views: 179
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.