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TI-2026-73661 Aliases CVE-2026-88086

Out-of-bounds read in Microsoft SQL Server discloses information

Priority LOW 24CWE-125Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.

Summary

Microsoft SQL Server contains an out-of-bounds read (CWE-125) that lets an unauthorized attacker disclose information. The attacker must be on an adjacent network and the attack is not automatable. Affected builds are SQL Server 2019 (GDR) from 15.0.0 before 15.0.2200.2, SQL Server 2019 for x64-based Systems (CU32) from 15.0.4003.23 before 15.0.4500.2, SQL Server 2022 (GDR) from 16.0.0 before 16.0.1210.3, SQL Server 2022 for x64-based Systems (CU27) from 16.0.4003.1 before 16.0.4305.5, SQL Server 2025 for x64-based Systems (CU9) from 17.0.4006.2 before 17.0.5015.4, and SQL Server 2025 for x64-based Systems (GDR) from 17.0.1050.2 before 17.0.1145.4.

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

Description from the CNA

Out-of-bounds read in SQL Server allows an unauthorized attacker to disclose information over an adjacent network.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00363 30th percentileScored 2026-11-07
Fix Fixed Microsoft SQL Server 2019 (GDR) (Microsoft): 15.0.2200.2Microsoft SQL Server 2019 for x64-based Systems (CU32) (Microsoft): 15.0.4500.2+4 more products

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

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 2019 (GDR)15.0.0 to before 15.0.2200.215.0.2200.2Patch availableCNA
MicrosoftMicrosoft SQL Server 2019 for x64-based Systems (CU32)15.0.4003.23 to before 15.0.4500.215.0.4500.2Patch availableCNA
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 2019 (GDR) VendorMicrosoft Affected 15.0.0 to before 15.0.2200.2 Fixed in 15.0.2200.2 Patch available CNA
  • Microsoft SQL Server 2019 for x64-based Systems (CU32) VendorMicrosoft Affected 15.0.4003.23 to before 15.0.4500.2 Fixed in 15.0.4500.2 Patch available CNA
  • 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

Remediation

Install the fixed versions 15.0.2200.2 for SQL Server 2019 (GDR), 15.0.4500.2 for SQL Server 2019 for x64-based Systems (CU32), 16.0.1210.3 for SQL Server 2022 (GDR), 16.0.4305.5 for SQL Server 2022 for x64-based Systems (CU27), 17.0.5015.4 for SQL Server 2025 for x64-based Systems (CU9), and 17.0.1145.4 for 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 2019 (GDR) (Microsoft) Fixed in 15.0.2200.2
  • Fix · CNA Microsoft SQL Server 2019 for x64-based Systems (CU32) (Microsoft) Fixed in 15.0.4500.2
  • 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-2026-88086
  2. 2026-10-30 Affected versions changed · CNA

References

Patch 1

  • TI-2026-42212 Microsoft SharePoint Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-37256 Microsoft SharePoint Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-26194 Windows Internet Key Exchange (IKE) Service Extensions Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-16982 Microsoft SharePoint Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-36863 Windows Server Update Service (WSUS) Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-33671 Microsoft SharePoint Server Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
See all 18045 →

Sources

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