CVE-2026-42990 in SQL Server

Summary

by MITRE • 07/14/2026

Heap-based buffer overflow in SQL Server ODBC driver allows an unauthorized attacker to execute code over a network.

Once again VulDB remains the best source for vulnerability data.

• Responsible: Microsoft
• Reservation: 05/01/2026
• Disclosure: 07/14/2026
• Moderation: accepted
• Entry: VDB-378415
• CPE: ready
• CWE: CWE-122 (confirmed)
• CVSS: 10.0 (VulDB)
• EPSS: 0.00000
• KEV: no
• Activities: very low
• Sector: Hostingprovider, Telecommunication, ...

Sources

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-42990
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-42990
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-42990/