CVE-2021-31173: microsoft microsoft sharepoint enterprise server 2016
CVSS: 5.3v3.1MediumModified
Published 11-05-2021Last modified 28-02-2025
Vulnerability summary
CVE-2021-31173 is a medium (CVSS 5.3) vulnerability in microsoft microsoft sharepoint enterprise server 2016. EPSS estimates a 2.08% chance of exploitation in the next 30 days, higher than 81.2% of scored vulnerabilities.
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)EPSS score
2.08%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 11-05-2021PublishedVulnerability first disclosed.
- 28-02-2025Last modifiedVulnerability information updated.
Description
Microsoft SharePoint Server Information Disclosure Vulnerability
CVSS metrics
3 scores · 2 sources · 2 versionsMedium 5.3Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:CSourcesAll 2 agree
- NVDNIST5.3MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Medium 4.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:S/C:P/I:N/A:NSourcesSingle source
EPSS trend
Probability
2.08%
Chance of exploitation in the next 30 days
Percentile
81%
Versus all other CVEs
30-day change
0.00 pp
From 2.08% on 20-09-2026
20-09-202620-10-2026
EPSS score2.08%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Microsoft5 products
- microsoft sharepoint enterprise server 2016≥ 16.0.0, < 16.0.5161.1000
- microsoft sharepoint foundation 2013 service pack 1≥ 15.0.0, < 15.0.5345.1000
- microsoft sharepoint server 2019≥ 16.0.0, < 16.0.10374.20000
- sharepoint_foundation2013:sp1
- sharepoint_server2016 | 2019
1 vendor · 5 products
References
1 links
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31173X Refsource MISCPatchVendor Advisory