CVE-2026-78456

SQL Server Remote Code Execution Vulnerability

Published Sep 8, 2026 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Description
Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Microsoft microsoft Sql Server 2022 (gdr)
Microsoft microsoft Sql Server 2025 (cu 2)
Vendors & Products Microsoft microsoft Sql Server 2022 (gdr)
Microsoft microsoft Sql Server 2025 (cu 2)
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Heap-based buffer overflow in SQL Server allows an authorized attacker to execute code over a network.
Title SQL Server Remote Code Execution Vulnerability
First Time appeared Microsoft
Microsoft sql Server 2022
Weaknesses CWE-122
CPEs cpe:2.3:a:microsoft:sql_server_2022:*:*:*:*:*:*:x64:*
Vendors & Products Microsoft
Microsoft sql Server 2022
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
microsoft
Published
Updated
Nov 10, 2026, 9:37 PM
Reserved
Aug 24, 2026, 4:21 PM
Status
Analyzed
Published
Sep 8, 2026, 6:20 PM
Modified
Sep 15, 2026, 2:55 PM