Microsoft SQL Server Elevation of Privilege Vulnerability

CVE

CVE-2026-85876

Severity

Important

CVSS base score

7.0

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Impact

Elevation of Privilege

Exploitation detected

Not reported by MSRC

Publicly disclosed

No

Exploitability

Exploitation Unlikely

Component

SQL Server

Weakness

CWE-416: Use After Free

Issued by

Microsoft

Customer action

Required: apply the update

Affected products

Microsoft SQL Server 2019 for x64-based Systems (CU32), Microsoft SQL Server 2019 for x64-based Systems (GDR), 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)

Updates that fix it

KB5126934: Microsoft SQL Server 2022 for x64-based Systems (CU27) (restart required); KB5126967: Microsoft SQL Server 2025 for x64-based Systems (CU9) (restart required); KB5128492: Microsoft SQL Server 2025 for x64-based Systems (GDR) (restart required); KB5128493: Microsoft SQL Server 2022 for x64-based Systems (GDR) (restart required); KB5128494: Microsoft SQL Server 2019 for x64-based Systems (CU32) (restart required); KB5128495: Microsoft SQL Server 2019 for x64-based Systems (GDR) (restart required)

CISA KEV

Not listed in the collected catalog

EPSS

0.2%; scored 23 Oct 2026

Public exploit code

No Nuclei template listed

Published

13 Oct 2026 07:00 UTC

Last revised

13 Oct 2026 07:00 UTC

Revision note

Information published.

• MSRC advisory
• NVD
• CVE.org
• October 2026
• KB5126934
• KB5126967
• KB5128492
• KB5128493
• KB5128494
• KB5128495

Microsoft security releases

Complete at observationRead 23 Oct 2026 at 15:50 UTC

CISA KEV

Complete at observationRead 23 Oct 2026 at 15:50 UTC

FIRST EPSS

Complete at observationRead 23 Oct 2026 at 15:50 UTC

Public exploit code

Complete at observationRead 23 Oct 2026 at 15:50 UTC

Coverage describes the sources at this observation. A complete read then does not establish their current position.

1. 23 Oct 2026 · 15:51:28 UTC EPSS0.2%; scored 22 Oct 2026 → 0.2%; scored 23 Oct 2026
2. 23 Oct 2026 · 09:33:49 UTC Public exploit codeUnknown: exploit-code evidence is incomplete or retained → No Nuclei template listed
3. 23 Oct 2026 · 09:33:49 UTC CISA KEVUnknown: catalog evidence is incomplete or retained → Not listed in the collected catalog
4. 23 Oct 2026 · 09:33:49 UTC Source coverage: public-exploit-codeIncomplete → Current
5. 23 Oct 2026 · 09:33:49 UTC Source coverage: first-epssIncomplete → Current
6. 23 Oct 2026 · 09:33:49 UTC Source coverage: cisa-kevIncomplete → Current
7. 23 Oct 2026 · 09:33:49 UTC Source coverage: msrc-cvrfIncomplete → Current
8. 23 Oct 2026 · 08:31:50 UTC Public exploit codeNo Nuclei template listed → Unknown: exploit-code evidence is incomplete or retained
9. 23 Oct 2026 · 08:31:50 UTC CISA KEVNot listed in the collected catalog → Unknown: catalog evidence is incomplete or retained
10. 23 Oct 2026 · 08:31:50 UTC Source coverage: public-exploit-codeCurrent → Incomplete
11. 23 Oct 2026 · 08:31:50 UTC Source coverage: first-epssCurrent → Incomplete
12. 23 Oct 2026 · 08:31:50 UTC Source coverage: cisa-kevCurrent → Incomplete

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A day selects the latest observation by the end of that UTC day; today's selection can change until midnight. History starts when this installation records it.