Important CVSS 8.8 EPSS 0.00992 2025-12 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

8.8
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
Category Spoofing
Released Dec 9 2025
Last Updated Dec 9 2025
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.00992 — 0.57998 percentile

CVSS Vector

ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
Temporal Score: 7.7

EPSS Score

0.00992
probability of exploitation in the next 30 days
0.57998 percentile - updated 2026-06-20
View on FIRST.org

Affected Products

1 affected product
Product KB Article Severity Impact Restart Required
Microsoft SharePoint Server Subscription Edition 5002815 (Security Update) Important Spoofing Maybe

Patches

1 patch
Article Type Restart
5002815 Security Update Maybe

Known Exploits

Acknowledgments

José Pedro Pereira Junior; https://www.linkedin.com/in/jose-pedro-pereira-jr/