CVE-2026-78442

Windows OLE DB 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 Windows OLE DB allows an unauthorized 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
CPEs cpe:2.3:a:microsoft:sql_server_2017:*:*:*:*:*:*:x64:*
Type Values Removed Values Added
First Time appeared Microsoft microsoft Sql Server 2017 (gdr)
Microsoft microsoft Sql Server 2019 (gdr)
Vendors & Products Microsoft microsoft Sql Server 2017 (gdr)
Microsoft microsoft Sql Server 2019 (gdr)
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 Windows OLE DB allows an unauthorized attacker to execute code over a network.
Title Windows OLE DB Remote Code Execution Vulnerability
First Time appeared Microsoft
Microsoft sql Server 2017
Microsoft sql Server 2019
Weaknesses CWE-122
CPEs cpe:2.3:a:microsoft:sql_server_2017:*:-:*:*:*:*:x64:*
cpe:2.3:a:microsoft:sql_server_2019:*:*:*:*:*:*:x64:*
Vendors & Products Microsoft
Microsoft sql Server 2017
Microsoft sql Server 2019
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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 23, 2026, 3:36 PM