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TI-2026-21110 Aliases CVE-2026-26116GHSA-qmc2-fr3x-59pg

SQL Server Elevation of Privilege Vulnerability

Priority MEDIUM 42CWE-89Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Privilege escalation
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

Improper neutralization of special elements used in an sql command ('sql injection') in SQL Server allows an authorized attacker to elevate privileges over a network.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01187 68th percentileScored 2026-11-07
Fix Fixed Microsoft: 2 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 2025 (CU 2)17.0.0.0 to before 17.0.4020.217.0.4020.2Patch availableCNA
MicrosoftMicrosoft SQL Server 2025 for x64-based Systems (GDR)17.0.1050.2 to before 17.0.1105.217.0.1105.2Patch availableCNA
  • Microsoft SQL Server 2025 (CU 2) VendorMicrosoft Affected 17.0.0.0 to before 17.0.4020.2 Fixed in 17.0.4020.2 Patch available CNA
  • Microsoft SQL Server 2025 for x64-based Systems (GDR) VendorMicrosoft Affected 17.0.1050.2 to before 17.0.1105.2 Fixed in 17.0.1105.2 Patch available CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:sql_server_2016:*:*:*:*:*:*:x64:*13.0.6300.2 to before 13.0.6480.4; 13.0.7000.253 to before 13.0.7075.5VulnerableMicrosoft
cpe:2.3:a:microsoft:sql_server_2017:*:*:*:*:*:*:x64:*14.0.1000.169 to before 14.0.2100.4; 14.0.3006.16 to before 14.0.3520.4VulnerableMicrosoft
cpe:2.3:a:microsoft:sql_server_2019:*:*:*:*:*:*:x64:*15.0.2000.5 to before 15.0.2160.4; 15.0.4003.23 to before 15.0.4460.4VulnerableMicrosoft
cpe:2.3:a:microsoft:sql_server_2022:*:*:*:*:*:*:x64:*16.0.1000.6 to before 16.0.1170.5; 16.0.4003.1 to before 16.0.4240.4VulnerableMicrosoft
cpe:2.3:a:microsoft:sql_server_2025:*:*:*:*:*:*:x64:*17.0.1000.7 to before 17.0.1105.2; 17.0.4006.2 to before 17.0.4020.2VulnerableMicrosoft
  • cpe:2.3:a:microsoft:sql_server_2016:*:*:*:*:*:*:x64:* Versions 13.0.6300.2 to before 13.0.6480.4; 13.0.7000.253 to before 13.0.7075.5 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:sql_server_2017:*:*:*:*:*:*:x64:* Versions 14.0.1000.169 to before 14.0.2100.4; 14.0.3006.16 to before 14.0.3520.4 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:sql_server_2019:*:*:*:*:*:*:x64:* Versions 15.0.2000.5 to before 15.0.2160.4; 15.0.4003.23 to before 15.0.4460.4 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:sql_server_2022:*:*:*:*:*:*:x64:* Versions 16.0.1000.6 to before 16.0.1170.5; 16.0.4003.1 to before 16.0.4240.4 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:sql_server_2025:*:*:*:*:*:*:x64:* Versions 17.0.1000.7 to before 17.0.1105.2; 17.0.4006.2 to before 17.0.4020.2 Vulnerable ·Microsoft

Remediation

Microsoft 2 updates

  • KB5077468
    Security Update
    • Microsoft SQL Server 2025 for x64-based Systems (GDR) 17.0.1105.2
  • KB5077466
    Security Update
    • Microsoft SQL Server 2025 for x64-based Systems (CU2) 17.0.4020.2

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Elevation of Privilege
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-26116
  2. 2026-10-03 Alias added: GHSA-qmc2-fr3x-59pg

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 99 →

Sources

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