CVE-2026-83977: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Heap-based buffer overflow in Windows Biometric Service allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-83977) involves a heap-based buffer overflow in the Windows Biometric Service component of Microsoft Windows 10 Version 1607 (build 10.0.14393.0). An authorized local attacker can exploit this flaw to elevate their privileges on the affected system. The vulnerability is classified under CWE-122 (Heap-based Buffer Overflow) and has a CVSS v3.1 base score of 7.8, indicating high severity. Microsoft has released an official fix to address this issue.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate privileges, potentially gaining higher-level access than intended. This could lead to full system compromise depending on the privileges gained. The vulnerability affects confidentiality, integrity, and availability with high impact as indicated by the CVSS vector.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 10 Version 1607 (build 10.0.14393.0) as soon as possible to remediate this vulnerability. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83977 for detailed patch information and update instructions.
CVE-2026-83977: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Description
Heap-based buffer overflow in Windows Biometric Service allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-83977) involves a heap-based buffer overflow in the Windows Biometric Service component of Microsoft Windows 10 Version 1607 (build 10.0.14393.0). An authorized local attacker can exploit this flaw to elevate their privileges on the affected system. The vulnerability is classified under CWE-122 (Heap-based Buffer Overflow) and has a CVSS v3.1 base score of 7.8, indicating high severity. Microsoft has released an official fix to address this issue.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate privileges, potentially gaining higher-level access than intended. This could lead to full system compromise depending on the privileges gained. The vulnerability affects confidentiality, integrity, and availability with high impact as indicated by the CVSS vector.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 10 Version 1607 (build 10.0.14393.0) as soon as possible to remediate this vulnerability. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83977 for detailed patch information and update instructions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-09-01T01:02:23.995Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83977","vendor":"Microsoft"}]
Threat ID: 6aa04579acd9273b49fbdf0b
Added to database: 09/08/2026, 17:27:21 UTC
Last enriched: 09/08/2026, 17:53:11 UTC
Last updated: 09/09/2026, 00:24:01 UTC
Views: 5
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