Important CVSS 5.4 EPSS 0.00356 2026-08 archive

Executive Summary

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.

Overview

5.4
CVSS MEDIUM
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
Category Spoofing
Released Aug 11 2026
Last Updated Aug 11 2026
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.00356 — 0.28623 percentile
NVD CVSS 5.4 MEDIUM — differs from MSRC

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
Required
SCOPE
Changed
CONFIDENTIALITY
Low
INTEGRITY
Low
AVAILABILITY
None
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 4.0

EPSS Score

0.00356
probability of exploitation in the next 30 days
0.28623 percentile - updated 2026-08-14
View on FIRST.org

Affected Products

1 affected product
Product KB Article Severity Impact Restart Required
Microsoft SharePoint Server 2019 5002894 (Security Update) 5002896 (Security Update) Important Spoofing Base: 4.6 Temporal: 4.0 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C 16.0.10417.20198 Maybe None Microsoft SharePoint Server Subscription Edition 5002893 (Security Update) Important Spoofing Maybe

Patches

1 patch
Article Type Restart
5002893 Security Update Maybe

Known Exploits

Acknowledgments

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