CVE-2026-21262
SQL Server Elevation of Privilege Vulnerability
Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
SQL Server Elevation of Privilege Vulnerability
Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network.
- Record
CVE-2026-21262- CVSS 3.1
- 8.8 High
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 - Weakness
- CWE-284
- Updated
- 2026-11-02
EUVDEUVD-2026-10569
Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network.
- Record
EUVD-2026-10569- CVSS 3.1
- 8.8 High
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-wmrr-4347-6m3q
Improper access control in SQL Server allows an authorized attacker to elevate privileges over a...
Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network.
- Record
GHSA-wmrr-4347-6m3q- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-284
- Updated
- 2026-11-02
NVD
Improper access control in SQL Server allows an authorized attacker to elevate privileges over a network.
- Record
CVE-2026-21262- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-284
- Updated
- 2026-11-02
Affected products
- microsoft sql server 2016 service pack 3 (gdr)
- microsoft sql server 2016 service pack 3 azure connect feature pack
- microsoft sql server 2017 (cu 31)
- microsoft sql server 2017 (gdr)
- microsoft sql server 2019 (cu 32)
- microsoft sql server 2019 (gdr)
- microsoft sql server 2022 (gdr)
- microsoft sql server 2022 for x64-based systems (cu 23)
- microsoft sql server 2025 (cu 2)
- microsoft sql server 2025 for x64-based systems (gdr)
- microsoft sql server 2016
- microsoft sql server 2017
Show 3 moreShow less
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-21262 is a high vulnerability (CVSS 8.8) in Microsoft Sql Server 2016 Service Pack 3 (gdr), published March 10, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.66%, the 76th percentile. No source names a fixed version.