CVE-2026-73028: CWE-284: Improper Access Control in Microsoft Microsoft SQL Server 2017 (CU 31)
Description
Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network.
CVSS v3.1
Score 8.8high
Affected software
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)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-284) in Microsoft SQL Server 2017 (CU 31) and related versions allows an attacker with authorized access to the server to elevate their privileges remotely. The CVSS 3.1 score is 8.8, indicating high severity with network attack vector, low attack complexity, and no user interaction required. The flaw impacts confidentiality, integrity, and availability. Microsoft has published an official fix and recommends applying the update to remediate the issue.
Potential Impact
An attacker with authorized network access can exploit this vulnerability to gain elevated privileges on the affected SQL Server instances. This can lead to full compromise of the database server, including unauthorized data access, modification, and potential disruption of service.
Mitigation Recommendations
Microsoft has released official patches to address this vulnerability. Users should apply the updates for their respective SQL Server versions as detailed in the Microsoft Security Response Center advisory. No additional mitigations are specified beyond applying the official fix.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-10T18:43:43.200Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-73028","vendor":"Microsoft"}]
Threat ID: 6aa04555acd9273b49fa9e9b
Added to database: 09/08/2026, 17:26:45 UTC
Last enriched: 10/14/2026, 21:55:31 UTC
Last updated: 10/23/2026, 15:10:14 UTC
Views: 25
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.