CVE-2021-31963
published 2021-06-08CVE-2021-31963: Microsoft SharePoint Server Remote Code Execution Vulnerability
PriorityP356high8.8CVSS 3.1
AVNACLPRLUINSUCHIHAH
EPSS
2.12%
79.9th percentile
Microsoft SharePoint Server Remote Code Execution Vulnerability
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | microsoft_sharepoint_enterprise_server_2013_service_pack_1 | >= 15.0.0 < 15.0.5353.1000 | 15.0.5353.1000 |
| microsoft | microsoft_sharepoint_enterprise_server_2016 | >= 16.0.0 < 16.0.5173.1000 | 16.0.5173.1000 |
| microsoft | microsoft_sharepoint_foundation_2013_service_pack_1 | >= 15.0.0 < 15.0.5353.1000 | 15.0.5353.1000 |
| microsoft | microsoft_sharepoint_server_2019 | >= 16.0.0 < 16.0.10375.20000 | 16.0.10375.20000 |
| microsoft | sharepoint_foundation | — | — |
| microsoft | sharepoint_server | — | — |
| microsoft | sharepoint_server | — | — |
| microsoft | sharepoint_server | — | — |
| msrc | microsoft_sharepoint_enterprise_server_2013_service_pack_1 | — | — |
| msrc | microsoft_sharepoint_enterprise_server_2016 | — | — |
| msrc | microsoft_sharepoint_foundation_2013_service_pack_1 | — | — |
| msrc | microsoft_sharepoint_server_2019 | — | — |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv2.06.5MEDIUMAV:N/AC:L/Au:S/C:P/I:P/A:P
vendor_msrc7.1HIGH
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
GHSA
GHSA-hvcm-v277-w2xw: Microsoft SharePoint Server Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-26420, CVE-2021-31966
ghsa_unreviewed·2022-05-24·CVSS 7.1
CVE-2021-31963 [HIGH] GHSA-hvcm-v277-w2xw: Microsoft SharePoint Server Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-26420, CVE-2021-31966
Microsoft SharePoint Server Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-26420, CVE-2021-31966.
GHSA
GHSA-988w-q87v-mrx5: Microsoft SharePoint Server Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-26420, CVE-2021-31963
ghsa_unreviewed·2022-05-24·CVSS 7.1
CVE-2021-31966 [HIGH] GHSA-988w-q87v-mrx5: Microsoft SharePoint Server Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-26420, CVE-2021-31963
Microsoft SharePoint Server Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-26420, CVE-2021-31963.
GHSA
GHSA-fgqv-x4rv-8256: Microsoft SharePoint Server Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-31963, CVE-2021-31966
ghsa_unreviewed·2022-05-24·CVSS 7.1
CVE-2021-26420 [HIGH] GHSA-fgqv-x4rv-8256: Microsoft SharePoint Server Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-31963, CVE-2021-31966
Microsoft SharePoint Server Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-31963, CVE-2021-31966.
Microsoft
Microsoft SharePoint Server Remote Code Execution Vulnerability
vendor_msrc·2021-06-08·CVSS 7.1
CVE-2021-31963 [HIGH] Microsoft SharePoint Server Remote Code Execution Vulnerability
Microsoft SharePoint Server Remote Code Execution Vulnerability
Microsoft Office SharePoint: Microsoft Office SharePoint
Microsoft: Microsoft
Impact: Remote Code Execution
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely;Older Software Release:Exploitation Less Likely;DOS:N/A
Reference: https://www.microsoft.com/downloads/details.aspx?familyid=29e155c6-6f3d-4f43-b08b-2f7976876511
Reference: https://support.microsoft.com/help/5001946
Reference: https://www.microsoft.com/downloads/details.aspx?familyid=d3d98284-da2c-429b-9081-3dc8a0a1217c
Reference: https://www.microsoft.com/downloads/details.aspx?familyid=a385fbc2-ca6c-4abf-affd-92e6fb46688b
Reference: https://www.microsoft.com/downloads/details.aspx?familyid=b009b05d-86c1-404d-947
No detection rules found.
No public exploits indexed.
Krebs
Microsoft Patches Six Zero-Day Security Holes
blogs_krebs·2021-06-08·CVSS 5.2
[MEDIUM] Microsoft Patches Six Zero-Day Security Holes
Microsoft today released another round of security updates for Windows operating systems and supported software, including fixes for six zero-day bugs that malicious hackers already are exploiting in active attacks.
June’s Patch Tuesday addresses just 49 security holes — about half the normal number of vulnerabilities lately. But what this month lacks in volume it makes up for in urgency: Microsoft warns that bad guys are leveraging a half-dozen of those weaknesses to break into computers in targeted attacks.
Among the zero-days are:
–CVE-2021-33742, a remote code execution bug in a Windows HTML component.
–CVE-2021-31955, an information disclosure bug in the Windows Kernel
–CVE-2021-31956, an elevation of privilege flaw in Windows NTFS
–CVE-2021-33739, an elevation of privilege flaw
Qualys
Microsoft & Adobe Patch Tuesday (June 2021) – Microsoft 50 Vulnerabilities with 5 Critical, Adobe 21 Critical Vulnerabilities | Qualys
blogs_qualys·2021-06-08·CVSS 5.2
CVE-2021-31985 [MEDIUM] Microsoft & Adobe Patch Tuesday (June 2021) – Microsoft 50 Vulnerabilities with 5 Critical, Adobe 21 Critical Vulnerabilities | Qualys
### Microsoft Patch Tuesday – June 2021
Microsoft patched 50 CVEs in their June 2021 Patch Tuesday release, and five of them are rated as critical severity. Six have applicable exploits.
#### Critical Microsoft Vulnerabilities Patched
CVE-2021-31985 – Microsoft Defender Remote Code Execution Vulnerability
Microsoft released patches addressing a critical RCE vulnerability in its Defender product (CVE-2021-31985). This CVE has a high likelihood of exploitability and is assigned a CVSSv3 base score of 7.8 by the vendor.
CVE-2021-31959 – Scripting Engine Memory Corruption Vulnerability
Microsoft released patches addressing a critical memory corruption vulnerability in the Chakra JScript scripting engine. This vulnerability impacts Windows RT, Windows 7, Windows 8, Windows 10, Windows Ser
Qualys
Microsoft & Adobe Patch Tuesday (June 2021) – Microsoft 50 Vulnerabilities with 5 Critical, Adobe 21 Critical Vulnerabilities
blogs_qualys·2021-06-08·CVSS 5.2
CVE-2021-31985 [MEDIUM] Microsoft & Adobe Patch Tuesday (June 2021) – Microsoft 50 Vulnerabilities with 5 Critical, Adobe 21 Critical Vulnerabilities
## Microsoft Patch Tuesday – June 2021
Microsoft patched 50 CVEs in their June 2021 Patch Tuesday release, and five of them are rated as critical severity. Six have applicable exploits.
## Critical Microsoft Vulnerabilities Patched
CVE-2021-31985 – Microsoft Defender Remote Code Execution Vulnerability
Microsoft released patches addressing a critical RCE vulnerability in its Defender product (CVE-2021-31985). This CVE has a high likelihood of exploitability and is assigned a CVSSv3 base score of 7.8 by the vendor.
CVE-2021-31959 – Scripting Engine Memory Corruption Vulnerability
Microsoft released patches addressing a critical memory corruption vulnerability in the Chakra JScript scripting engine. This vulnerability impacts Windows RT, Windows 7, Windows 8, Windows 10, Windows Server
Krebs
Microsoft Patches Six Zero-Day Security Holes
blogs_krebs·2021-06-08·CVSS 5.2
[MEDIUM] Microsoft Patches Six Zero-Day Security Holes
Microsoft today released another round of security updates for Windows operating systems and supported software, including fixes for six zero-day bugs that malicious hackers already are exploiting in active attacks.
June’s Patch Tuesday addresses just 49 security holes — about half the normal number of vulnerabilities lately. But what this month lacks in volume it makes up for in urgency: Microsoft warns that bad guys are leveraging a half-dozen of those weaknesses to break into computers in targeted attacks.
Among the zero-days are:
– CVE-2021-33742 , a remote code execution bug in a Windows HTML component.
– CVE-2021-31955 , an information disclosure bug in the Windows Kernel
– CVE-2021-31956 , an elevation of privilege flaw in Windows NTFS
– CVE-2021-33739 , an elevation of privilege
Crowdstrike
June 2021 Patch Tuesday: Updates and Analysis
blogs_crowdstrike·CVSS 7.5
CVE-2026-20929 [HIGH] June 2021 Patch Tuesday: Updates and Analysis
How CrowdStrike is Accelerating Exposure Evaluation as Adversaries Gain Speed Apr 06, 2026
STARDUST CHOLLIMA Likely Compromises Axios npm Package Apr 01, 2026
Falcon for IT Supports Windows Secure Boot Certificate Lifecycle Management Apr 01, 2026
Detecting CVE-2026-20929: Kerberos Authentication Relay via CNAME Abuse Mar 31, 2026
How CrowdStrike is Accelerating Exposure Evaluation as Adversaries Gain Speed Apr 06, 2026
STARDUST CHOLLIMA Likely Compromises Axios npm Package Apr 01, 2026
Falcon for IT Supports Windows Secure Boot Certificate Lifecycle Management Apr 01, 2026
Detecting CVE-2026-20929: Kerberos Authentication Relay via CNAME Abuse Mar 31, 2026
Video Highlights the 4 Key Steps to Successful Incident Response Dec 02, 2019
Helping Non-Security Stakeholders Understand AT
Crowdstrike
June 2021 Patch Tuesday: Updates and Analysis
blogs_crowdstrike·CVSS 7.5
CVE-2026-20929 [HIGH] June 2021 Patch Tuesday: Updates and Analysis
STARDUST CHOLLIMA Likely Compromises Axios npm Package Apr 01, 2026
Falcon for IT Supports Windows Secure Boot Certificate Lifecycle Management Apr 01, 2026
Detecting CVE-2026-20929: Kerberos Authentication Relay via CNAME Abuse Mar 31, 2026
How Charlotte AI AgentWorks Fuels Security's Agentic Ecosystem Mar 25, 2026
STARDUST CHOLLIMA Likely Compromises Axios npm Package Apr 01, 2026
Falcon for IT Supports Windows Secure Boot Certificate Lifecycle Management Apr 01, 2026
Detecting CVE-2026-20929: Kerberos Authentication Relay via CNAME Abuse Mar 31, 2026
How Charlotte AI AgentWorks Fuels Security's Agentic Ecosystem Mar 25, 2026
Video Highlights the 4 Key Steps to Successful Incident Response Dec 02, 2019
Helping Non-Security Stakeholders Understand ATT&CK in 10 Minutes or Less [VI
2021-06-08
Published