MSRC-CVE-2026-73029 — Microsoft SQL Server Information Disclosure Vulnerability

Summary

Impact: Information Disclosure. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.

Details

What type of information could be disclosed by this vulnerability?
An attacker who successfully exploited this vulnerability could view heap memory from a privileged process running on the server.

Security updates
15.0.2190.7 — https://support.microsoft.com/help/5122773
16.0.1200.5 — https://support.microsoft.com/help/5122771
17.0.1135.8 — https://support.microsoft.com/help/5122770
15.0.4490.9 — https://support.microsoft.com/help/5122772
17.0.4085.5 — https://support.microsoft.com/help/5122769
16.0.4275.2 — https://support.microsoft.com/help/5122768

Vulnerabilities 1

Medium 6.5

CVE-2026-73029

Microsoft SQL Server Information Disclosure Vulnerability

Buffer over-read in SQL Server allows an authorized attacker to disclose information over a network.

Microsoft Microsoft SQL Server 2019 (GDR) Microsoft SQL Server 2022 (GDR) Microsoft SQL Server 2025 for x64-based Systems (GDR)

Sep 8, 2026

Revision history

2026-09-08 #1
Information published.

References

CVE-2026-73029 Microsoft SQL Server Information Disclosure Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-73029
Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
Common Vulnerability Scoring System
https://www.first.org/cvss