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CVE-2026-45453

Microsoft SharePoint Server Spoofing Vulnerability

Published: Jun 9, 2026Updated: Jun 10, 2026 Sources: CVE List NVD
NVD MITRE
5.4CVSS
MEDIUM

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

EPSS Score
0.1%
Top 80.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None

Weaknesses

CWE-79

Affected Products

sharepoint server
microsoft
Operating Systems / windows
Microsoft SharePoint Enterprise Server 2016
Microsoft
Operating Systems / windows
Microsoft SharePoint Server 2019
Microsoft
Operating Systems / windows
Microsoft SharePoint Server Subscription Edition
Microsoft
Operating Systems / windows
microsoftcommercialUSOperating Systems

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45453
msrc.microsoft.com

Timeline

Published
Jun 9, 2026
Last Updated
Jun 10, 2026
News mentions
3

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