CVE-2021-1636
Microsoft SQL Elevation of Privilege Vulnerability
Microsoft SQL Elevation of Privilege Vulnerability
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
Microsoft SQL Elevation of Privilege Vulnerability
Microsoft SQL Elevation of Privilege Vulnerability
- Record
CVE-2021-1636- 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-89
- Updated
- 2026-11-02
EUVDEUVD-2021-7103
Microsoft SQL Elevation of Privilege Vulnerability
- Record
EUVD-2021-7103- 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
- 2026-11-03
GitHub AdvisoriesGHSA-hmh6-2fr5-6q37
Microsoft SQL Elevation of Privilege Vulnerability
Microsoft SQL Elevation of Privilege Vulnerability
- Record
GHSA-hmh6-2fr5-6q37- 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-89
- Updated
- 2026-11-02
NVD
Microsoft SQL Elevation of Privilege Vulnerability
- Record
CVE-2021-1636- 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 - CVSS 2.0
- 6.5 Medium
AV:N/AC:L/Au:S/C:P/I:P/A:P - Weakness
- CWE-89
- Updated
- 2026-11-02
Affected products
- microsoft sql server 2012 for x64-based systems service pack 4 (qfe)
- microsoft sql server 2012 service pack 4 (qfe)
- microsoft sql server 2014 service pack 3 (cu 4)
- microsoft sql server 2014 service pack 3 (gdr)
- microsoft sql server 2016 for x64-based systems service pack 2 (gdr)
- microsoft sql server 2016 service pack 2 (cu 15)
- microsoft sql server 2017 (cu 22)
- microsoft sql server 2017 (gdr)
- microsoft sql server 2019 (cu 8)
- microsoft sql server 2019 (gdr)
- microsoft sql server
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | Nate0634034090/bug-free-memory | 2022-03-04 |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-1636 is a high vulnerability (CVSS 8.8) in Microsoft Sql Server 2012 For X64-based Systems Service Pack 4 (qfe), published January 12, 2021. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 6.51%, the 93rd percentile. No source names a fixed version.