Critical CVSS 8.3 EPSS 0.00264 2025-11 archive

Executive Summary

None

Overview

8.3
CVSS HIGH
Critical
MS Severity
Not Exploited
MS Exploit Status
N/A
MS Exploit Likelihood
Category Spoofing
Released Nov 11 2025
Last Updated Nov 11 2025
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.00264 — 0.17497 percentile

CVSS Vector

ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
Temporal Score: 7.2

EPSS Score

0.00264
probability of exploitation in the next 30 days
0.17497 percentile - updated 2026-06-20
View on FIRST.org

Affected Products

1 affected product
Product KB Article Severity Impact Restart Required
Microsoft 365 Defender Portal Critical Spoofing Unknown

Patches

1 patch
Article Type Restart
Unknown

Known Exploits

Acknowledgments