CVE-2026-42990: SQL Server ODBC driver Elevation of Privilege Vulnerability
Heap-based buffer overflow in SQL Server ODBC driver allows an unauthorized attacker to execute code over a network.
Other sources
SQL Server ODBC driver Elevation of Privilege Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.14393.9339Patch KB5099535 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.3.9600.23228Patch KB5094041 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.28000.2269Patch KB5095051 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.33158Patch KB5099536 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.2.9200.26132Patch KB5094042 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.8875Patch KB5101650 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.22631.7376Patch KB5099414 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26200.8875Patch KB5101650 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19045.7548Patch KB5099539 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19044.7548Patch KB5099539 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.9020Patch KB5099538 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5386Patch KB5099540 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.28000.2525Patch KB5101649
Event History
Frequently Asked Questions
What is the severity of CVE-2026-42990?
CVE-2026-42990 has a critical severity rating of 9.8.
What does CVE-2026-42990 exploit in SQL Server ODBC driver?
CVE-2026-42990 is a heap-based buffer overflow vulnerability that allows unauthorized code execution.
Which software is affected by CVE-2026-42990?
CVE-2026-42990 affects various versions of Microsoft Windows, including Windows 10, Windows 11, and several Server editions.
How do I fix CVE-2026-42990?
To fix CVE-2026-42990, you should update the SQL Server ODBC driver to the latest version provided by Microsoft.
What risk does CVE-2026-42990 pose to users?
CVE-2026-42990 poses a high risk as it allows attackers to execute arbitrary code over a network.