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CVE-2020-16952

80
FAUCET Score

CVE-2020-16952 is a critical remote code execution vulnerability affecting Microsoft SharePoint Enterprise Server, Foundation, and Server. It allows an unauthenticated attacker to execute arbitrary code within the SharePoint application pool and server farm account by uploading a specially crafted application package. This vulnerability has a high CVSS score of 8.6, indicating a network-based attack with low complexity, and can lead to significant impact on confidentiality, integrity, and availability. While not listed in CISA KEV, public exploit modules exist (Metasploit, Nuclei), and it has garnered substantial community discussion and media coverage, with government advisories urging patching.

Impacted Technologies

VendorProductVersion(s)CPE
2016CPE matchmatch criteria
cpe:2.3:a:microsoft:sharepoint_enterprise_server:2016:*:*:*:*:*:*:*
2013CPE matchmatch criteria
cpe:2.3:a:microsoft:sharepoint_foundation:2013:sp1:*:*:*:*:*:*
2019CPE matchmatch criteria
cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.6HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
HIGH
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
4.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
70.89%
Probability of exploitation in next 30 days
EPSS Percentile
99.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
Metasploit: Microsoft SharePoint Server-Side Include and ViewState RCE · Oct 13, 2020
Nuclei: CVE-2020-16952 · Oct 14, 2020
This CVE's current EPSS score of 0.7089 is in the 99th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Microsoft SharePoint Enterprise Server 2016
View patch
microsoftpatch availablevia msrc
Product: Microsoft SharePoint Server 2019
View patch
microsoftpatch availablevia msrc
Product: Microsoft SharePoint Foundation 2013 Service Pack 1
View patch

Vendor Advisories (1)

microsoft2020-Oct/CVE-2020-16952Critical

Microsoft SharePoint Remote Code Execution Vulnerability

Oct 13, 2020

References

packetstormsecurity.com / files/159612/Microsoft-SharePoint-SSI-ViewState-Remote-Code-Execution.html
ExploitThird Party Advisory
portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2020-16952
PatchVendor Advisory