CVE-2026-67393: Microsoft SQL Server Information Disclosure Vulnerability
Buffer over-read in SQL Server allows an authorized attacker to disclose information over a network.
Other sources
Microsoft SQL Server Information Disclosure Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 17.0.4085.5Patch KB5122769 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.1200.5Patch KB5122771 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 15.0.4490.9Patch KB5122772 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 17.0.1135.8Patch KB5122770 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 14.0.3550.4Patch KB5122774 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 14.0.2130.4Patch KB5122775 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 15.0.2190.7Patch KB5122773 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.4275.2Patch KB5122768
Event History
Frequently Asked Questions
What access does an attacker need to exploit this issue?
The attacker must be authorized and able to reach the SQL Server instance over the network. No user interaction is required.
What is the expected security impact?
The issue can disclose information from the server. The provided CVSS vector indicates high confidentiality impact, with no integrity or availability impact.
Which SQL Server releases are identified as affected?
The affected software list includes SQL Server 2017 and SQL Server 2017 CU 31, SQL Server 2019 and SQL Server 2019 CU 32, SQL Server 2022 and SQL Server 2022 CU 26, and SQL Server 2025 and SQL Server 2025 CU8.