CVE-2026-20829: CWE-125: Out-of-bounds Read in Microsoft Windows 10 Version 1809
Out-of-bounds read in Windows TPM allows an authorized attacker to disclose information locally.
AI Analysis
Technical Summary
This vulnerability involves an out-of-bounds read in the Trusted Platform Module (TPM) implementation on Windows 10 Version 1809 (build 10.0.17763.0). An attacker with local privileges can exploit this flaw to read memory beyond intended boundaries, potentially disclosing sensitive information. The issue does not allow for privilege escalation or denial of service but impacts confidentiality. Microsoft has released an official patch to remediate this vulnerability.
Potential Impact
An authorized local attacker can exploit this vulnerability to disclose sensitive information from memory due to an out-of-bounds read in the TPM component. The vulnerability does not impact integrity or availability. There are no known exploits in the wild at the time of publication.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20829 to remediate this vulnerability.
CVE-2026-20829: CWE-125: Out-of-bounds Read in Microsoft Windows 10 Version 1809
Description
Out-of-bounds read in Windows TPM allows an authorized attacker to disclose information locally.
CVSS v3.1
Score 5.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves an out-of-bounds read in the Trusted Platform Module (TPM) implementation on Windows 10 Version 1809 (build 10.0.17763.0). An attacker with local privileges can exploit this flaw to read memory beyond intended boundaries, potentially disclosing sensitive information. The issue does not allow for privilege escalation or denial of service but impacts confidentiality. Microsoft has released an official patch to remediate this vulnerability.
Potential Impact
An authorized local attacker can exploit this vulnerability to disclose sensitive information from memory due to an out-of-bounds read in the TPM component. The vulnerability does not impact integrity or availability. There are no known exploits in the wild at the time of publication.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20829 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-03T05:54:20.374Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20829","vendor":"Microsoft"}]
Threat ID: 69668adda60475309f9adfe4
Added to database: 01/13/2026, 18:11:41 UTC
Last enriched: 07/30/2026, 23:48:01 UTC
Last updated: 09/10/2026, 19:36:52 UTC
Views: 166
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