CVE-2026-78441 Windows OLE DB Information Disclosure Vulnerability
An out-of-bounds read in Windows OLE DB allows attackers to disclose sensitive information over the network.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-78441?
CVE-2026-78441 is a medium-severity vulnerability in Microsoft Sql Server 2017, published on 8 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Out-of-bounds read in Windows OLE DB allows an unauthorized attacker to disclose information over a network.
Weakness: CWE-125
Which versions are affected by CVE-2026-78441?
It affects 2 products.
Products include Microsoft Sql Server 2017, Microsoft Sql Server 2019.
How do I fix CVE-2026-78441?
No fix has been published for CVE-2026-78441 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-78441 being exploited?
There is no known exploitation of CVE-2026-78441 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Sql Server 2017
- CVE-2026-67631 Microsoft SQL Server Remote Code Execution Vulnerability
- CVE-2026-66814 Microsoft SQL Server Elevation of Privilege Vulnerability
- CVE-2026-66818 Microsoft SQL Server Elevation of Privilege Vulnerability
- CVE-2026-66819 Microsoft SQL Server Elevation of Privilege Vulnerability
- CVE-2026-66820 SQL Server Elevation of Privilege Vulnerability
Sources
Also known as GHSA-jvcr-r2w7-m2qx.