CVE-2021-43876
Microsoft SharePoint Elevation of Privilege Vulnerability
Microsoft SharePoint 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 SharePoint Elevation of Privilege Vulnerability
Microsoft SharePoint Elevation of Privilege Vulnerability
- Record
CVE-2021-43876- 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
EUVDEUVD-2021-30738
Microsoft SharePoint Elevation of Privilege Vulnerability
- Record
EUVD-2021-30738- 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-5vx7-rqhr-2p9x
Microsoft SharePoint Elevation of Privilege Vulnerability.
Microsoft SharePoint Elevation of Privilege Vulnerability.
- Record
GHSA-5vx7-rqhr-2p9x- 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-269
- Updated
- 2026-11-02
NVD
Microsoft SharePoint Elevation of Privilege Vulnerability
- Record
CVE-2021-43876- 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
- 6.0 Medium
AV:N/AC:M/Au:S/C:P/I:P/A:P - Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-43876 is a high vulnerability (CVSS 8.8) in Microsoft Sharepoint Enterprise Server 2013 Service Pack 1, published December 29, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.03%, the 81st percentile. No source names a fixed version.