CVE 2025 59499 SQL Server High Severity 8.8 Patch and Mitigation

19 days ago

Microsoft patched CVE 2025 59499 on November 11, 2025. This High severity (CVSS 8.8) SQL Server vulnerability involves SQL injection related behavior and may allow an authorized low privilege user to elevate privileges over the network.

Why it matters
Privilege escalation in SQL Server can increase risk quickly, from sensitive data exposure to unauthorized changes and potential creation of elevated accounts.

What to do now
1 Patch SQL Server ASAP
2 Restrict network access to SQL Server
3 Enforce least privilege and remove unnecessary admin rights
4 Monitor for unusual activity including unexpected or admin like T SQL from non admin users

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#Cybersecurity #SQLServer #CVE #PatchTuesday #VulnerabilityManagement #DatabaseSecurity #LeastPrivilege #HoplonInfosec

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