SQL Server Remote Code Execution Vulnerability

I am running SQL Server on my system. What action do I need to take?
Update your relevant version of SQL Server using the applicable November 2026 security update listed below.
First, determine your SQL Server version number. For more information, see Microsoft Knowledge Base Article 321185 - How to determine the version, edition, and update level of SQL Server and its components., Second, locate the range containing your current version number in the following table. The corresponding update is the one you need to install.
5129299: 5129299, SQL Server 2025 CU10+GDR (November GDR 2026): SQL Server 2025 CU10+GDR (November GDR 2026), 17.0.5045.3: 17.0.5045.3, 17.0.4006.2 - 17.0.5035.5: 17.0.4006.2 - 17.0.5035.5, KB5125471 - SQL2025 RTM CU10: KB5125471 - SQL2025 RTM CU10, 5132748: 5132748, SQL Server 2025 RTM+GDR (November GDR 2026): SQL Server 2025 RTM+GDR (November GDR 2026), 17.0.1155.3: 17.0.1155.3, 17.0.1000.7 - 17.0.1145.4: 17.0.1000.7 - 17.0.1145.4, KB5128492 - Previous SQL2025 RTM GDR: KB5128492 - Previous SQL2025 RTM GDR, 5129300: 5129300, SQL Server 2022 CU27+GDR2 (November GDR 2026): SQL Server 2022 CU27+GDR2 (November GDR 2026), 16.0.4315.2: 16.0.4315.2, 16.0.4003.1 - 16.0.4305.5: 16.0.4003.1 - 16.0.4305.5, KB5126934 - SQL2022 RTM CU27 GDR: KB5126934 - SQL2022 RTM CU27 GDR, 5132747: 5132747, SQL Server 2022 RTM+GDR (November GDR 2026): SQL Server 2022 RTM+GDR (November GDR 2026), 16.0.1220.3: 16.0.1220.3, 16.0.1000.6 - 16.0.1210.3: 16.0.1000.6 - 16.0.1210.3, KB5128493 - Previous SQL2022 RTM GDR: KB5128493 - Previous SQL2022 RTM GDR, 5132745: 5132745, SQL Server 2019 CU32+GDR (November GDR 2026): SQL Server 2019 CU32+GDR (November GDR 2026), 15.0.4510.2: 15.0.4510.2, 15.0.4003.23 - 15.0.4500.2: 15.0.4003.23 - 15.0.4500.2, KB5128494 - Previous SQL2019 RTM CU32 GDR: KB5128494 - Previous SQL2019 RTM CU32 GDR, 5132751: 5132751, SQL Server 2019 RTM+GDR (November GDR 2026): SQL Server 2019 RTM+GDR (November GDR 2026), 15.0.2210.4: 15.0.2210.4, 15.0.2000.5 - 15.0.2200.2: 15.0.2000.5 - 15.0.2200.2, KB5128495 - Previous SQL2019 RTM GDR: KB5128495 - Previous SQL2019 RTM GDR, 5132746: 5132746, SQL Server 2017 CU31+GDR (November GDR 2026): SQL Server 2017 CU31+GDR (November GDR 2026), 14.0.3570.2: 14.0.3570.2, 14.0.3006.16 - 14.0.3560.2: 14.0.3006.16 - 14.0.3560.2, KB5128496 - Previous SQL2017 RTM CU31 GDR: KB5128496 - Previous SQL2017 RTM CU31 GDR, 5132749: 5132749, SQL Server 2017 RTM+GDR (November GDR 2026): SQL Server 2017 RTM+GDR (November GDR 2026), 14.0.2150.2: 14.0.2150.2, 14.0.1000.169 - 14.0.2140.2: 14.0.1000.169 - 14.0.2140.2, KB5128497 - Previous SQL2017 RTM GDR: KB5128497 - Previous SQL2017 RTM GDR
General Distribution Release (GDR) updates provide security and other broadly applicable critical fixes. Cumulative Updates (CUs) include accumulated fixes for the applicable SQL Server release. Use the version ranges above to select the security update for your installed servicing branch; CU+GDR updates apply to the listed CU branch, while RTM+GDR updates apply to the listed RTM/GDR branch.

According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?
Successful exploitation of this vulnerability requires an attacker to have a deep understanding of the system. Successful exploitation is not guaranteed and depends on a combination of factors that might include the environment, system configuration, and the presence of additional security measures.

Security updates
17.0.5045.3 — https://support.microsoft.com/help/5129299
16.0.4315.2 — https://support.microsoft.com/help/5129300