CVE-2026-85880: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Heap-based buffer overflow in Windows ALPC allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability is a heap-based buffer overflow in the Windows Advanced Local Procedure Call (ALPC) mechanism. It allows a local attacker with some level of authorization to execute code with elevated privileges by exploiting improper handling of memory buffers. The affected product is Windows 10 Version 1607, specifically build 10.0.14393.0. Microsoft has published an official fix to address this issue.
Potential Impact
Successful exploitation of this vulnerability could allow an authorized local attacker to elevate their privileges on the affected system, potentially gaining higher-level access and control. The CVSS score of 7.8 reflects high impact on confidentiality, integrity, and availability.
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-2026-85880 to remediate this vulnerability.
CVE-2026-85880: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Description
Heap-based buffer overflow in Windows ALPC 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 is a heap-based buffer overflow in the Windows Advanced Local Procedure Call (ALPC) mechanism. It allows a local attacker with some level of authorization to execute code with elevated privileges by exploiting improper handling of memory buffers. The affected product is Windows 10 Version 1607, specifically build 10.0.14393.0. Microsoft has published an official fix to address this issue.
Potential Impact
Successful exploitation of this vulnerability could allow an authorized local attacker to elevate their privileges on the affected system, potentially gaining higher-level access and control. The CVSS score of 7.8 reflects high impact on confidentiality, integrity, and availability.
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-2026-85880 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-09-04T18:18:19.326Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85880","vendor":"Microsoft"}]
Threat ID: 6aa0457cacd9273b49fbdf89
Added to database: 09/08/2026, 17:27:24 UTC
Last enriched: 09/08/2026, 17:37:04 UTC
Last updated: 09/09/2026, 01:15:33 UTC
Views: 27
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.
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.