CVE-2026-42990: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Heap-based buffer overflow in SQL Server ODBC driver allows an unauthorized attacker to execute code over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-42990) involves a heap-based buffer overflow in the SQL Server ODBC driver component of Microsoft Windows 10 Version 1607 (build 10.0.14393.0). The flaw enables remote, unauthenticated attackers to execute arbitrary code on affected systems over a network. The CVSS v3.1 base score is 9.8 (critical), reflecting the ease of exploitation (network vector, no privileges or user interaction required) and the high impact on confidentiality, integrity, and availability. Microsoft has released an official patch to remediate this vulnerability.
Potential Impact
Successful exploitation can lead to complete compromise of affected systems, allowing attackers to execute arbitrary code remotely with no authentication or user interaction required. This can result in full system takeover, data loss, or disruption of services.
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-2026-42990 to remediate this vulnerability.
CVE-2026-42990: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Description
Heap-based buffer overflow in SQL Server ODBC driver allows an unauthorized attacker to execute code over a network.
CVSS v3.1
Score 9.8critical
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-42990) involves a heap-based buffer overflow in the SQL Server ODBC driver component of Microsoft Windows 10 Version 1607 (build 10.0.14393.0). The flaw enables remote, unauthenticated attackers to execute arbitrary code on affected systems over a network. The CVSS v3.1 base score is 9.8 (critical), reflecting the ease of exploitation (network vector, no privileges or user interaction required) and the high impact on confidentiality, integrity, and availability. Microsoft has released an official patch to remediate this vulnerability.
Potential Impact
Successful exploitation can lead to complete compromise of affected systems, allowing attackers to execute arbitrary code remotely with no authentication or user interaction required. This can result in full system takeover, data loss, or disruption of services.
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-2026-42990 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-04-30T23:43:50.746Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42990","vendor":"Microsoft"}]
Threat ID: 6a566f6768715ace43e6b311
Added to database: 07/14/2026, 17:18:31 UTC
Last enriched: 08/13/2026, 14:15:33 UTC
Last updated: 08/26/2026, 22:52:10 UTC
Views: 108
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