CVE-2026-20820: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Heap-based buffer overflow in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability involves a heap-based buffer overflow in the Windows Common Log File System Driver on Windows 10 Version 1607. An authorized attacker with local access can exploit this flaw to gain elevated privileges, potentially compromising system integrity. The CVSS v3.1 score of 7.8 reflects high impact on confidentiality, integrity, and availability. The vendor has released a patch to remediate this vulnerability.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate privileges, potentially leading to full system compromise. The vulnerability affects confidentiality, integrity, and availability of the system. There are no known exploits in the wild at this time.
Mitigation Recommendations
A patch is available for this vulnerability. It is recommended to apply the official Microsoft update for Windows 10 Version 1607 (build 10.0.14393.0) to remediate the issue. No additional mitigation steps are specified.
CVE-2026-20820: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Description
Heap-based buffer overflow in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a heap-based buffer overflow in the Windows Common Log File System Driver on Windows 10 Version 1607. An authorized attacker with local access can exploit this flaw to gain elevated privileges, potentially compromising system integrity. The CVSS v3.1 score of 7.8 reflects high impact on confidentiality, integrity, and availability. The vendor has released a patch to remediate this vulnerability.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate privileges, potentially leading to full system compromise. The vulnerability affects confidentiality, integrity, and availability of the system. There are no known exploits in the wild at this time.
Mitigation Recommendations
A patch is available for this vulnerability. It is recommended to apply the official Microsoft update for Windows 10 Version 1607 (build 10.0.14393.0) to remediate the issue. No additional mitigation steps are specified.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-03T05:54:20.373Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69668adba60475309f9adf9a
Added to database: 1/13/2026, 6:11:39 PM
Last enriched: 4/3/2026, 12:42:13 PM
Last updated: 5/9/2026, 2:43:10 AM
Views: 121
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