CVE-2026-77480: SQL Server Elevation of Privilege Vulnerability
Insufficient granularity of access control in SQL Server allows an authorized attacker to elevate privileges over a network.
Other sources
SQL Server Elevation of Privilege Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 17.0.4085.5Patch KB5122769 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 17.0.1135.8Patch KB5122770 - Upgrade
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Fixed in 15.0.4490.9Patch KB5122772 - Upgrade
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Fixed in 15.0.2190.7Patch KB5122773 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 14.0.3550.4Patch KB5122774 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.4275.2Patch KB5122768 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.1200.5Patch KB5122771 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 14.0.2130.4Patch KB5122775
Event History
Frequently Asked Questions
Which SQL Server deployments are identified as affected?
The listed affected products are Microsoft SQL Server 2017, 2019, 2022, and 2025. The data specifically includes SQL Server 2017 CU 31, SQL Server 2019 CU 32, SQL Server 2022 CU 26, and SQL Server 2025 CU8.
Does exploitation require an unauthenticated attacker or user interaction?
The attacker must be authorized, so exploitation requires existing privileges. The vector is network-based, requires low attack complexity, and does not require user interaction.
What is the potential impact if exploited?
An authorized attacker could elevate privileges. The supplied scoring indicates high impacts to confidentiality, integrity, and availability.