CVE-2026-35420: CWE-122: Heap-based Buffer Overflow in Microsoft Windows Server 2012
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-35420) involves a heap-based buffer overflow in the Windows Kernel component of Microsoft Windows Server 2012 (version 6.2.9200.0). An attacker with local authorized access can exploit this flaw to elevate their privileges, potentially gaining higher-level control over the 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 published an official fix to remediate this vulnerability.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate privileges, compromising confidentiality, integrity, and availability of the affected system. This could lead to full system compromise if the attacker gains administrative rights.
Mitigation Recommendations
An official fix is available from Microsoft. It is strongly recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-35420 to remediate this vulnerability. No additional mitigation steps are indicated by the vendor.
CVE-2026-35420: CWE-122: Heap-based Buffer Overflow in Microsoft Windows Server 2012
Description
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-35420) involves a heap-based buffer overflow in the Windows Kernel component of Microsoft Windows Server 2012 (version 6.2.9200.0). An attacker with local authorized access can exploit this flaw to elevate their privileges, potentially gaining higher-level control over the 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 published an official fix to remediate this vulnerability.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate privileges, compromising confidentiality, integrity, and availability of the affected system. This could lead to full system compromise if the attacker gains administrative rights.
Mitigation Recommendations
An official fix is available from Microsoft. It is strongly recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-35420 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
- 2026-04-02T19:21:11.804Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-35420","vendor":"Microsoft"}]
Threat ID: 6a036547cbff5d861008c642
Added to database: 5/12/2026, 5:37:11 PM
Last enriched: 5/12/2026, 7:07:14 PM
Last updated: 5/13/2026, 4:58:38 AM
Views: 2
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