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TI-2026-54541 Aliases CVE-2026-78442GHSA-gvh2-qc62-c423

Windows OLE DB Remote Code Execution Vulnerability

Priority MEDIUM 42CWE-122Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Microsoft. Impact type from Microsoft.

Summary

Heap-based buffer overflow in Windows OLE DB allows an unauthorized attacker to execute code over a network.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00819 57th percentileScored 2026-11-07
Fix Fixed Microsoft: 4 updates

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 2017 (CU 31)14.0.0 to before 14.0.3550.414.0.3550.4Patch availableCNA
MicrosoftMicrosoft SQL Server 2017 (GDR)14.0.0 to before 14.0.2130.414.0.2130.4Patch availableCNA
MicrosoftMicrosoft SQL Server 2019 (CU 32)15.0.0.0 to before 15.0.4490.915.0.4490.9Patch availableCNA
MicrosoftMicrosoft SQL Server 2019 (GDR)15.0.0 to before 15.0.2190.715.0.2190.7Patch availableCNA
  • Microsoft SQL Server 2017 (CU 31) VendorMicrosoft Affected 14.0.0 to before 14.0.3550.4 Fixed in 14.0.3550.4 Patch available CNA
  • Microsoft SQL Server 2017 (GDR) VendorMicrosoft Affected 14.0.0 to before 14.0.2130.4 Fixed in 14.0.2130.4 Patch available CNA
  • Microsoft SQL Server 2019 (CU 32) VendorMicrosoft Affected 15.0.0.0 to before 15.0.4490.9 Fixed in 15.0.4490.9 Patch available CNA
  • Microsoft SQL Server 2019 (GDR) VendorMicrosoft Affected 15.0.0 to before 15.0.2190.7 Fixed in 15.0.2190.7 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:sql_server_2017:*:*:*:*:*:*:x64:*before 14.0.2130.4; 14.0.3006.16 to before 14.0.3550.4VulnerableMicrosoft
cpe:2.3:a:microsoft:sql_server_2019:*:*:*:*:*:*:x64:*before 15.0.2190.7; 15.0.4003.23 – 15.0.4490.9VulnerableMicrosoft
  • cpe:2.3:a:microsoft:sql_server_2017:*:*:*:*:*:*:x64:* Versions before 14.0.2130.4; 14.0.3006.16 to before 14.0.3550.4 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:sql_server_2019:*:*:*:*:*:*:x64:* Versions before 15.0.2190.7; 15.0.4003.23 – 15.0.4490.9 Vulnerable ·Microsoft

Remediation

Microsoft 4 updates

  • KB5122775
    Security Update
    • Microsoft SQL Server 2017 for x64-based Systems (GDR) 14.0.2130.4
  • KB5122774
    Security Update
    • Microsoft SQL Server 2017 for x64-based Systems (CU 31) 14.0.3550.4
  • KB5122773
    Security Update
    • Microsoft SQL Server 2019 for x64-based Systems (GDR) 15.0.2190.7
Show 1 more Microsoft updates
  • KB5122772
    Security Update
    • Microsoft SQL Server 2019 for x64-based Systems (CU 32) 15.0.4490.9

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Remote Code Execution
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-78442
  2. 2026-10-03 Alias added: GHSA-gvh2-qc62-c423

References

Patch 1

  • TI-2019-00798 Improper input validation in Microsoft SQL Server 2014 Service Pack 2 for 32-bit Systems KEVCVSS 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 154 →

Sources

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