What is CVE-2026-83945?

CVE-2026-83945 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Microsoft SQL Server Remote Code Execution Vulnerability

Which CVE IDs does CVE-2026-83945 cover?

CVE-2026-83945 covers the following CVE IDs: CVE-2026-83945. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-83945?

CVE-2026-83945 has a CVSS v3 base score of 6.6, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-83945?

CVE-2026-83945 affects 5 products, including: Microsoft SQL Server 2022 for x64-based Systems (CU27); Microsoft SQL Server 2022 for x64-based Systems (GDR); Microsoft SQL Server 2025 for x64-based Systems (CU8); Microsoft SQL Server 2025 for x64-based Systems (CU9); Microsoft SQL Server 2025 for x64-based Systems (GDR).

CVE-2026-83945HighCVSS 6.6

Microsoft SQL Server Remote Code Execution Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

October 13, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-83945 →

📋 Description

Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.

🎯 Affected products5

Microsoft SQL Server 2022 for x64-based Systems (CU27)
Microsoft SQL Server 2022 for x64-based Systems (GDR)
Microsoft SQL Server 2025 for x64-based Systems (CU8)
Microsoft SQL Server 2025 for x64-based Systems (CU9)
Microsoft SQL Server 2025 for x64-based Systems (GDR)

✅ Remediation

KB5128492 (Security Update) — fixed build 17.0.1145.4 KB5128493 (Security Update) — fixed build 16.0.1210.3 KB5126934 (Security Update) — fixed build 16.0.4305.5 KB5126967 (Security Update) — fixed build 17.0.5015.4

🔗 References (9)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83945
patchhttps://www.microsoft.com/download/details.aspx?familyid=05d38ba3-f609-4011-b045-d56a9eb0bccb
referencehttps://support.microsoft.com/help/5128492
patchhttps://www.microsoft.com/download/details.aspx?familyid=82f92ae1-1cf3-4c27-9938-0b44f5a0a296
referencehttps://support.microsoft.com/help/5128493
patchhttps://www.microsoft.com/download/details.aspx?familyid=a96e87d9-4786-4b4e-9274-8619b01ef73a
referencehttps://support.microsoft.com/help/5126934
patchhttps://www.microsoft.com/download/details.aspx?familyid=6d582614-a5b0-4cfa-b1f5-ef5c74f5d252
referencehttps://support.microsoft.com/help/5126967