Vulnerability · Published Sep 8, 2026 · Assigned by microsoft
CVE-2026-78441Windows OLE DB Information Disclosure Vulnerability
Medium 6.5
In plain English
A medium-severity out-of-bounds read in Microsoft SQL Server 2017 (CU 31) from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 60% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.9%top 39.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Out-of-bounds read in Windows OLE DB allows an unauthorized attacker to disclose information over a network.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft SQL Server 2017 (CU 31) | 14.0.0 – before 14.0.3550.4 |
| Microsoft | Microsoft SQL Server 2017 (GDR) | 14.0.0 – before 14.0.2130.4 |
| Microsoft | Microsoft SQL Server 2019 (CU 32) | 15.0.0.0 – before 15.0.4490.9 |
| Microsoft | Microsoft SQL Server 2019 (GDR) | 15.0.0 – before 15.0.2190.7 |
Weakness: CWE-125 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
References
- Windows OLE DB Information Disclosure Vulnerability vendor-advisory, patch