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TI-2026-73658 Aliases CVE-2026-88083

Microsoft SQL Server Remote Code Execution Vulnerability

Priority LOW 35CWE-121Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.

Summary

Microsoft SQL Server 2022 (GDR) from 16.0.0 before 16.0.1210.3, Microsoft SQL Server 2022 for x64-based Systems (CU27) from 16.0.4003.1 before 16.0.4305.5, Microsoft SQL Server 2025 for x64-based Systems (CU9) from 17.0.4006.2 before 17.0.5015.4, and Microsoft SQL Server 2025 for x64-based Systems (GDR) from 17.0.1050.2 before 17.0.1145.4 contain a stack-based buffer overflow (CWE-121) in SQL Server. An unauthorized attacker can execute code over a network, but the attack requires high complexity and user interaction.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Description from the CNA

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

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00487 42nd percentileScored 2026-11-07
Fix Fixed Microsoft SQL Server 2022 (GDR) (Microsoft): 16.0.1210.3Microsoft SQL Server 2022 for x64-based Systems (CU27) (Microsoft): 16.0.4305.5+2 more products

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftMicrosoft SQL Server 2022 (GDR)16.0.0 to before 16.0.1210.316.0.1210.3Patch availableCNA
MicrosoftMicrosoft SQL Server 2022 for x64-based Systems (CU27)16.0.4003.1 to before 16.0.4305.516.0.4305.5Patch availableCNA
MicrosoftMicrosoft SQL Server 2025 for x64-based Systems (CU9)17.0.4006.2 to before 17.0.5015.417.0.5015.4Patch availableCNA
MicrosoftMicrosoft SQL Server 2025 for x64-based Systems (GDR)17.0.1050.2 to before 17.0.1145.417.0.1145.4Patch availableCNA
  • Microsoft SQL Server 2022 (GDR) VendorMicrosoft Affected 16.0.0 to before 16.0.1210.3 Fixed in 16.0.1210.3 Patch available CNA
  • Microsoft SQL Server 2022 for x64-based Systems (CU27) VendorMicrosoft Affected 16.0.4003.1 to before 16.0.4305.5 Fixed in 16.0.4305.5 Patch available CNA
  • Microsoft SQL Server 2025 for x64-based Systems (CU9) VendorMicrosoft Affected 17.0.4006.2 to before 17.0.5015.4 Fixed in 17.0.5015.4 Patch available CNA
  • Microsoft SQL Server 2025 for x64-based Systems (GDR) VendorMicrosoft Affected 17.0.1050.2 to before 17.0.1145.4 Fixed in 17.0.1145.4 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:sql_server_2022:*:*:*:*:*:*:x64:*16.0.1000.6 to before 16.0.1210.3; 16.0.4003.1 to before 16.0.4305.5VulnerableMicrosoft
cpe:2.3:a:microsoft:sql_server_2025:*:*:*:*:*:*:x64:*17.0.1000.7 to before 17.0.1145.4; 17.0.4006.2 to before 17.0.5015.4VulnerableMicrosoft
  • cpe:2.3:a:microsoft:sql_server_2022:*:*:*:*:*:*:x64:* Versions 16.0.1000.6 to before 16.0.1210.3; 16.0.4003.1 to before 16.0.4305.5 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:sql_server_2025:*:*:*:*:*:*:x64:* Versions 17.0.1000.7 to before 17.0.1145.4; 17.0.4006.2 to before 17.0.5015.4 Vulnerable ·Microsoft

Remediation

Install the fixed versions 16.0.1210.3 for Microsoft SQL Server 2022 (GDR), 16.0.4305.5 for Microsoft SQL Server 2022 for x64-based Systems (CU27), 17.0.5015.4 for Microsoft SQL Server 2025 for x64-based Systems (CU9), and 17.0.1145.4 for Microsoft SQL Server 2025 for x64-based Systems (GDR).

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

  • Fix · CNA Microsoft SQL Server 2022 (GDR) (Microsoft) Fixed in 16.0.1210.3
  • Fix · CNA Microsoft SQL Server 2022 for x64-based Systems (CU27) (Microsoft) Fixed in 16.0.4305.5
  • Fix · CNA Microsoft SQL Server 2025 for x64-based Systems (CU9) (Microsoft) Fixed in 17.0.5015.4
  • Fix · CNA Microsoft SQL Server 2025 for x64-based Systems (GDR) (Microsoft) Fixed in 17.0.1145.4

Timeline

  1. 2026-10-13 Threatist record created from CVE-2026-88083
  2. 2026-10-16 CISA SSVC decision points changed
  3. 2026-10-30 Affected versions changed · CNA

References

Patch 1

  • TI-2024-19132 Microsoft ODBC Driver for SQL Server Remote Code Execution Vulnerability CVSS 3.1HIGH 8.8
  • TI-2025-31689 Microsoft SQL Server Information Disclosure Vulnerability CVSS 3.1HIGH 7.5
  • TI-2026-39042 Microsoft SQL Server Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2026-39041 Microsoft SQL Server Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2024-25283 Microsoft SQL Server Elevation of Privilege Vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2024-24853 Microsoft SQL Server Elevation of Privilege Vulnerability CVSS 3.1CRITICAL 9.8
See all 180 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences