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Microsoft Office SharePoint

CVE-2023-21717 — Microsoft SharePoint Server Elevation of Privilege Vulnerability

Important CVSS 8.8 EPSS 0.01095 2023-02 archive

Executive Summary

None

Overview

8.8
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
Category Elevation of Privilege
Released Feb 14 2023
Last Updated Feb 14 2023
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.01095 — 0.612 percentile
NVD CVSS 8.8 HIGH — matches MSRC

CVSS Vector

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
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 7.7

EPSS Score

0.01095
probability of exploitation in the next 30 days
0.612 percentile - updated 2026-06-21
View on FIRST.org

Affected Products

1 affected product
Product KB Article Severity Impact Restart Required
Microsoft SharePoint Enterprise Server 2013 Service Pack 1 5002346 (Cumulative Update) 5002347 (Security Update) 5002312 (Security Update) Important Elevation of Privilege 5002336 5002235 Base: 8.8 Temporal: 7.7 Vector: 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 15.0.5529.1000 Maybe None Microsoft SharePoint Enterprise Server 2016 5002350 (Security Update) 5002325 (Security Update) Important Elevation of Privilege 5002338 5002289 Base: 8.8 Temporal: 7.7 Vector: 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 16.0.5383.1000 Maybe None Microsoft SharePoint Foundation 2013 Service Pack 1 5002347 (Security Update) 5002312 (Security Update) Important Elevation of Privilege 5002336 5002235 Base: 8.8 Temporal: 7.7 Vector: 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 15.0.5529.1000 Maybe None Microsoft SharePoint Server 2019 5002342 (Security Update) 5002330 (Security Update) Important Elevation of Privilege 5002329 5002295 Base: 8.8 Temporal: 7.7 Vector: 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 16.0.10395.20001 Maybe None Microsoft SharePoint Server Subscription Edition 5002353 (Security Update) Important Elevation of Privilege Maybe

Patches

1 patch
Article Type Restart
5002353 Security Update Maybe

Known Exploits

Acknowledgments

Anonymous

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