Important CVSS 6.5 EPSS 0.00451 2025-11 archive

Executive Summary

Untrusted pointer dereference in Storvsp.sys Driver allows an authorized attacker to deny service locally.

Overview

6.5
CVSS MEDIUM
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
Category Denial of Service
Released Nov 11 2025
Last Updated Nov 11 2025
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.00451 — 0.36833 percentile
NVD CVSS 6.5 MEDIUM — matches MSRC

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C
ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Changed
CONFIDENTIALITY
None
INTEGRITY
None
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 5.7

EPSS Score

0.00451
probability of exploitation in the next 30 days
0.36833 percentile - updated 2026-07-25
View on FIRST.org

Affected Products

11 affected products
Product KB Article Severity Impact Restart Required
Windows 10 Version 1607 for x64-based Systems 5068864 (Security Update) Important Denial of Service Yes
Windows 10 Version 1809 for x64-based Systems 5068791 (Security Update) Important Denial of Service Yes
Windows 10 Version 21H2 for x64-based Systems 5068781 (Security Update) Important Denial of Service Yes
Windows 10 Version 22H2 for x64-based Systems 5068781 (Security Update) Important Denial of Service Yes
Windows 11 Version 23H2 for ARM64-based Systems 5068865 (Security Update) Important Denial of Service Yes
Windows 11 Version 23H2 for x64-based Systems 5068865 (Security Update) Important Denial of Service Yes
Windows 11 Version 24H2 for ARM64-based Systems 5068861 (Security Update) 5068966 (Security Hotpatch Update) Important Denial of Service 5066835 Base: 6.5 Temporal: 5.7 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C 10.0.26100.7171 10.0.26100.7092 Yes None Windows 11 Version 24H2 for x64-based Systems 5068861 (Security Update) 5068966 (Security Hotpatch Update) Important Denial of Service 5066835 Base: 6.5 Temporal: 5.7 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C 10.0.26100.7171 10.0.26100.7092 Yes None Windows 11 Version 25H2 for ARM64-based Systems 5068861 (Security Update) 5068966 (Security Hotpatch Update) Important Denial of Service 5066835 Base: 6.5 Temporal: 5.7 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C 10.0.26200.7171 10.0.26200.7092 Yes None Windows 11 Version 25H2 for x64-based Systems 5068861 (Security Update) 5068966 (Security Hotpatch Update) Important Denial of Service 5066835 Base: 6.5 Temporal: 5.7 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C 10.0.26200.7171 10.0.26200.7092 Yes None Windows Server 2016 5068864 (Security Update) Important Denial of Service Yes
Windows Server 2016 (Server Core installation) 5068864 (Security Update) Important Denial of Service Yes
Windows Server 2019 5068791 (Security Update) Important Denial of Service Yes
Windows Server 2019 (Server Core installation) 5068791 (Security Update) Important Denial of Service Yes
Windows Server 2022 5068787 (Security Update) 5068840 (Security Hotpatch Update) Important Denial of Service 5066782 Base: 6.5 Temporal: 5.7 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C 10.0.20348.4405 10.0.20348.4346 Yes None Windows Server 2022 (Server Core installation) 5068787 (Security Update) 5068840 (Security Hotpatch Update) Important Denial of Service 5066782 Base: 6.5 Temporal: 5.7 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C 10.0.20348.4405 10.0.20348.4346 Yes None Windows Server 2022, 23H2 Edition (Server Core installation) 5068779 (Security Update) Important Denial of Service Yes

Patches

5 patches
Article Type Restart
5068864 Security Update Yes
5068791 Security Update Yes
5068781 Security Update Yes
5068865 Security Update Yes
5068779 Security Update Yes

Known Exploits

Acknowledgments

Valter Wik with Cparta Cyber Defense AB
Valter Mann with Cparta Cyber Defense AB