CVE-2026-26176: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Heap-based buffer overflow in Windows Client Side Caching driver (csc.sys) allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability involves a heap-based buffer overflow in the csc.sys driver component of Windows 10 Version 1607. An attacker with local authorized access can exploit this flaw to gain elevated privileges, potentially compromising system integrity. The vulnerability is tracked as CWE-122 and has been assigned CVE-2026-26176. Microsoft has published an official security update to remediate the issue.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate their privileges, potentially gaining higher-level access to the affected system. This can lead to full system compromise depending on the privileges obtained. The vulnerability affects Windows 10 Version 1607 (build 10.0.14393.0). There are no reports of active exploitation in the wild.
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-2026-26176 to remediate this vulnerability. No additional mitigation steps are indicated by the vendor.
CVE-2026-26176: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Description
Heap-based buffer overflow in Windows Client Side Caching driver (csc.sys) 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 csc.sys driver component of Windows 10 Version 1607. An attacker with local authorized access can exploit this flaw to gain elevated privileges, potentially compromising system integrity. The vulnerability is tracked as CWE-122 and has been assigned CVE-2026-26176. Microsoft has published an official security update to remediate the issue.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate their privileges, potentially gaining higher-level access to the affected system. This can lead to full system compromise depending on the privileges obtained. The vulnerability affects Windows 10 Version 1607 (build 10.0.14393.0). There are no reports of active exploitation in the wild.
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-2026-26176 to remediate this vulnerability. No additional mitigation steps are indicated by the vendor.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-02-11T18:33:57.777Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26176","vendor":"Microsoft"}]
Threat ID: 69de7a1b82d89c981fd6a6d6
Added to database: 4/14/2026, 5:32:11 PM
Last enriched: 4/14/2026, 7:09:06 PM
Last updated: 4/15/2026, 6:08:44 AM
Views: 3
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