Important CVSS 5.5 EPSS 0.00617 2025-08 archive

Executive Summary

Exposure of sensitive information to an unauthorized actor in Storage Port Driver allows an authorized attacker to disclose information locally.

Overview

5.5
CVSS MEDIUM
Important
MS Severity
Not Exploited
MS Exploit Status
More Likely
MS Exploit Likelihood
Category Information Disclosure
Released Aug 12 2025
Last Updated Aug 12 2025
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.00617 — 0.44798 percentile
NVD CVSS 5.5 MEDIUM — matches MSRC

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
None
AVAILABILITY
None
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 4.8

EPSS Score

0.00617
probability of exploitation in the next 30 days
0.44798 percentile - updated 2026-06-21
View on FIRST.org

Affected Products

1 affected product
Product KB Article Severity Impact Restart Required
Windows 11 Version 24H2 for ARM64-based Systems 5063878 (Security Update) 5064010 (SecurityHotpatchUpdate) Important Information Disclosure 5062553 Base: 5.5 Temporal: 4.8 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C 10.0.26100.4946 10.0.26100.4851 Yes None Windows 11 Version 24H2 for x64-based Systems 5063878 (Security Update) 5064010 (SecurityHotpatchUpdate) Important Information Disclosure 5062553 Base: 5.5 Temporal: 4.8 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C 10.0.26100.4946 10.0.26100.4851 Yes None Windows Server 2022, 23H2 Edition (Server Core installation) 5063899 (SecurityUpdate) Important Information Disclosure Yes

Patches

1 patch
Article Type Restart
5063899 SecurityUpdate Yes

Known Exploits

Acknowledgments

Anonymous, DEVCORE - Angelboy (@scwuaptx) from DEVCORE Research Team with Trend Zero Day Initiative