CVE-2026-77487

Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network.

Scoring

Severity

HIGH

CVSS base score

8.8

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

EPSS probability

0.54%

CWE

CWE-284

Published

2026-09-08

Last modified

2026-09-09

Affected products

• Microsoft Microsoft SQL Server 2017 (CU 31)
• Microsoft Microsoft SQL Server 2017 (GDR)
• Microsoft Microsoft SQL Server 2019 (CU 32)
• Microsoft Microsoft SQL Server 2019 (GDR)
• Microsoft Microsoft SQL Server 2022 (CU 26)
• Microsoft Microsoft SQL Server 2022 (GDR)
• Microsoft Microsoft SQL Server 2025 (CU8)
• Microsoft Microsoft SQL Server 2025 for x64-based Systems (GDR)

Weakness type

• CWE-284

Related vulnerabilities

• CVE-2026-50165 — alf.io has Improper Access Control for Organization Owners that Exposes System Secrets
• CVE-2026-86774 — Snipe-IT before 8.7.0 Broken Access Control via AssetModelPolicy
• CVE-2026-19625 — IBM Enterprise Build of Quarkus is affected by multiple vulnerabilities
• CVE-2026-75998 — ColdFusion | Improper Access Control (CWE-284)
• CVE-2026-86672 — ningzichun Student Management System Backup example.7z information disclosure
• CVE-2026-81963 — Windows Update Stack Elevation of Privilege Vulnerability
• CVE-2026-73028 — SQL Server Elevation of Privilege Vulnerability
• CVE-2026-69282 — Microsoft Office SharePoint Remote Code Execution Vulnerability

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