CVE-2021-31181
Microsoft SharePoint Remote Code Execution Vulnerability
Microsoft SharePoint Remote Code Execution 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 Remote Code Execution Vulnerability
Microsoft SharePoint Remote Code Execution Vulnerability
- Record
CVE-2021-31181- 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-94
- Updated
- 2026-11-02
EUVDEUVD-2021-18094
Microsoft SharePoint Remote Code Execution Vulnerability
- Record
EUVD-2021-18094- 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-jv6v-h246-28v4
Microsoft SharePoint Remote Code Execution Vulnerability
Microsoft SharePoint Remote Code Execution Vulnerability
- Record
GHSA-jv6v-h246-28v4- 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-94
- Updated
- 2026-11-02
NVD
Microsoft SharePoint Remote Code Execution Vulnerability
- Record
CVE-2021-31181- 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-94
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Metasploit | Microsoft SharePoint Unsafe Control and ViewState RCE | 2021-05-11 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, Metasploit, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-31181 is a high vulnerability (CVSS 8.8) in Microsoft Sharepoint Enterprise Server 2016, published May 11, 2021. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 29.0%, the 98th percentile. No source names a fixed version.
References
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31181
zerodayinitiative.com/advisories/ZDI-21-573
packetstormsecurity.com/files/163208/Microsoft-SharePoint-Unsafe-Control-And-ViewState-Remote-Code-Execution.html
packetstorm.news/files/id/163208
nvd.nist.gov/vuln/detail/CVE-2021-31181
github.com/advisories/GHSA-jv6v-h246-28v4