Medium severity · published Sep 8, 2026
CVE-2026-78441
Windows OLE DB Information Disclosure Vulnerability
6.5
CVSS
0.9%
EPSS
No
On KEV
Description
Out-of-bounds read in Windows OLE DB allows an unauthorized attacker to disclose information over a network.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 60% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MS
Microsoft SQL Server 2017 (CU 31) · Microsoft
14.0.0 before 14.0.3550.4 · source: vendor
MS
Microsoft SQL Server 2017 (GDR) · Microsoft
14.0.0 before 14.0.2130.4 · source: vendor
MS
Microsoft SQL Server 2019 (CU 32) · Microsoft
15.0.0.0 before 15.0.4490.9 · source: vendor
MS
Microsoft SQL Server 2019 (GDR) · Microsoft
15.0.0 before 15.0.2190.7 · source: vendor
SS
Sql Server 2017 · Microsoft
before 14.0.2130.4; 14.0.3006.16 before 14.0.3550.4 · source: NVD
SS
Sql Server 2019 · Microsoft
before 15.0.2190.7; 15.0.4003.23 through 15.0.4490.9 · source: NVD
Affected product
MS
Microsoft SQL Server 2017 (CU 31)
Microsoft
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-78441
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-78441
vendor-advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78441
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