CVE-2023-21717
Microsoft SharePoint Server Elevation of Privilege Vulnerability
HIGH
8.8
CVSS Score
Published: February 14, 2023 at 07:33 PM UTC
Updated: August 19, 2026 at 05:18 PM UTC
6 products affected across 1 vendorSharePoint ServerSharePoint Enterprise ServerSharePoint Foundation
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Severity
HIGH8.8
Exploit prediction
EPSS 1%
SSVC
No known exploit
Description
Microsoft SharePoint Server Elevation of Privilege Vulnerability
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Affected range stops below 15.0.5529.1000, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.0.5529.1000, so it looks safe — our inference, not a vendor statement
15.0.0 ≤ v < 15.0.5529.100016.0.0 ≤ v < 16.0.10395.2000116.0.0 ≤ v < 16.0.15601.2047816.0.0 ≤ v < 16.0.5383.10002019
Affected range stops below 15.0.5529.1000, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.10395.20001, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.15601.20478, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.5383.1000, so it looks safe — our inference, not a vendor statement
16.0.0 ≤ v < 16.0.5383.100016.0.0
Affected range stops below 16.0.5383.1000, so it looks safe — our inference, not a vendor statement
16.0.0 ≤ v < 16.0.10395.2000116.0.0
Affected range stops below 16.0.10395.20001, so it looks safe — our inference, not a vendor statement
16.0.0 ≤ v < 16.0.15601.2047816.0.0
Affected range stops below 16.0.15601.20478, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
Vendor AdvisoryPatch
Source: [email protected]
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21717SSVC — Action Prioritization
SSVCNo known exploitNot automatableTotal impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
8.8HIGHmicrosoft
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-284NVD-CWE-noinfo
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