CVE-2020-1523

Microsoft SharePoint Server Tampering Vulnerability

HIGH
8.9
CVSS Score
Published: September 11, 2020 at 05:09 PM UTC
Updated: June 17, 2026 at 03:01 AM UTC
2 products affected across 1 vendorSharePoint ServerSharePoint Server 2019

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Severity
HIGH8.9
Exploit prediction
EPSS 2%
SSVC
No known exploit

Description

<p>A tampering vulnerability exists when Microsoft SharePoint Server fails to properly handle profile data. An attacker who successfully exploited this vulnerability could modify a targeted user's profile data.</p> <p>To exploit the vulnerability, an attacker would need to be authenticated on an affected SharePoint Server. The attacker would then need to send a specially modified request to the server, targeting a specific user.</p> <p>The security update addresses the vulnerability by modifying how Microsoft SharePoint Server handles profile data.</p>

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

16.0.0 ≤ v < publication16.0.0
Affected range stops below publication, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.9HIGHmicrosoft
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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