Out-of-bounds Read in Windows OLE DB Driver

Publication date: 2026-09-08

Last updated on: 2026-09-23

Assigner: Microsoft Corporation

Description

Out-of-bounds read in Windows OLE DB allows an unauthorized attacker to disclose information over a network.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-08

Last Modified

2026-09-23

Generated

2026-09-29

AI Q&A

2026-09-09

EPSS Evaluated

2026-09-27

NVD

CVE-2026-78441

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	sql_server_2017	to 14.0.2130.4 (exc)
microsoft	sql_server_2017	From 14.0.3006.16 (inc) to 14.0.3550.4 (exc)
microsoft	sql_server_2019	to 15.0.2190.7 (exc)
microsoft	sql_server_2019	From 15.0.4003.23 (inc) to 15.0.4490.9 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-125	The product reads data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This vulnerability is an out-of-bounds read issue in Windows OLE DB. It allows an unauthorized attacker to access and disclose information over a network without needing special privileges or user interaction.

Impact Analysis

An attacker could exploit this to read sensitive data from memory, potentially exposing confidential information such as credentials or personal data.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the OLE DB vulnerability. Monitor Microsoft's security advisories for patches and install them promptly.

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