CVE-2025-32722 — Windows Storage Port Driver Information Disclosure Vulnerability

Executive Summary

Improper access control in Windows Storage Port Driver allows an authorized attacker to disclose information locally.

Overview

5.5

CVSS MEDIUM

Important

MS Severity

Not Exploited

MS Exploit Status

Less Likely

MS Exploit Likelihood

Category Information Disclosure

Weakness CWE-284: Improper Access Control

Released Jun 10 2025

Last Updated Jun 10 2025

Publicly Disclosed No

CISA KEV Not Listed

Known Exploits None Known

EPSS Score 0.00992 — 0.59535 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

0.00992

probability of exploitation in the next 30 days

0.59535 percentile - updated 2026-08-14

View on FIRST.org

Affected Products

25 affected products

Product	KB Article	Severity	Impact	Restart Required
Windows 10 for 32-bit Systems	`5060998 (Security Update)`	Important	Information Disclosure	Yes
Windows 10 for x64-based Systems	`5060998 (Security Update)`	Important	Information Disclosure	Yes
Windows 10 Version 1607 for 32-bit Systems	`5061010 (Security Update)`	Important	Information Disclosure	Yes
Windows 10 Version 1607 for x64-based Systems	`5061010 (Security Update)`	Important	Information Disclosure	Yes
Windows 10 Version 1809 for 32-bit Systems	`5060531 (Security Update)`	Important	Information Disclosure	Yes
Windows 10 Version 1809 for x64-based Systems	`5060531 (Security Update)`	Important	Information Disclosure	Yes
Windows 10 Version 21H2 for 32-bit Systems	`5060533 (Security Update)`	Important	Information Disclosure	Yes
Windows 10 Version 21H2 for ARM64-based Systems	`5060533 (Security Update)`	Important	Information Disclosure	Yes
Windows 10 Version 21H2 for x64-based Systems	`5060533 (Security Update)`	Important	Information Disclosure	Yes
Windows 10 Version 22H2 for 32-bit Systems	`5060533 (Security Update)`	Important	Information Disclosure	Yes
Windows 10 Version 22H2 for ARM64-based Systems	`5060533 (Security Update)`	Important	Information Disclosure	Yes
Windows 10 Version 22H2 for x64-based Systems	`5060533 (Security Update)`	Important	Information Disclosure	Yes
Windows 11 Version 22H2 for ARM64-based Systems	`5060999 (Security Update)`	Important	Information Disclosure	Yes
Windows 11 Version 22H2 for x64-based Systems	`5060999 (Security Update)`	Important	Information Disclosure	Yes
Windows 11 Version 23H2 for ARM64-based Systems	`5060999 (Security Update)`	Important	Information Disclosure	Yes
Windows 11 Version 23H2 for x64-based Systems	`5060999 (Security Update)`	Important	Information Disclosure	Yes
Windows 11 Version 24H2 for ARM64-based Systems 5060842 (Security Update) 5060841 (SecurityHotpatchUpdate) Important Information Disclosure 5058411 5058497 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 10.0.26100.4349 10.0.26100.4270 Yes None Windows 11 Version 24H2 for x64-based Systems 5060842 (Security Update) 5060841 (SecurityHotpatchUpdate) Important Information Disclosure 5058411 5058497 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 10.0.26100.4349 10.0.26100.4270 Yes None Windows Server 2012	`5061059 (Monthly Rollup)`	Important	Information Disclosure	Yes
Windows Server 2012 (Server Core installation)	`5061059 (Monthly Rollup)`	Important	Information Disclosure	Yes
Windows Server 2012 R2	`5061018 (Monthly Rollup)`	Important	Information Disclosure	Yes
Windows Server 2012 R2 (Server Core installation)	`5061018 (Monthly Rollup)`	Important	Information Disclosure	Yes
Windows Server 2016	`5061010 (Security Update)`	Important	Information Disclosure	Yes
Windows Server 2016 (Server Core installation)	`5061010 (Security Update)`	Important	Information Disclosure	Yes
Windows Server 2019	`5060531 (Security Update)`	Important	Information Disclosure	Yes
Windows Server 2019 (Server Core installation)	`5060531 (Security Update)`	Important	Information Disclosure	Yes
Windows Server 2022 5060526 (Security Update) 5060525 (SecurityHotpatchUpdate) Important Information Disclosure 5058385 5058500 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 10.0.20348.3807 10.0.20348.3745 Yes None Windows Server 2022 (Server Core installation) 5060526 (Security Update) 5060525 (SecurityHotpatchUpdate) Important Information Disclosure 5058385 5058500 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 10.0.20348.3807 10.0.20348.3745 Yes None Windows Server 2022, 23H2 Edition (Server Core installation)	`5060118 (Security Update)`	Important	Information Disclosure	Yes

Patches

8 patches

Article	Type	Restart
`5060998`	Security Update	Yes
`5061010`	Security Update	Yes
`5060531`	Security Update	Yes
`5060533`	Security Update	Yes
`5060999`	Security Update	Yes
`5061059`	Monthly Rollup	Yes
`5061018`	Monthly Rollup	Yes
`5060118`	Security Update	Yes

Patch Diff

ghidriff · storport.sys (KB5060999)

Improper access control (CWE-284) in the Windows Storage Port Driver storport.sys storage-diagnostic IOCTL path, local kernel-memory-address information disclosure (Important, Information Disclosure, AV:L/PR:L/UI:N, C:H/I:N/A:N, CVSS 5.5). storport exposes a storage-diagnostic IOCTL handled by RaUnitStorageDiagnosticIoctl, which builds a diagnostic buffer (RaBuildDiagnosticBufferForMiniport) whose contents include kernel-space memory addresses. PRE: the handler served that diagnostic buffer to any authorized (local, low-privileged) caller with no privilege check, leaking kernel addresses usable to defeat KASLR for follow-on exploitation (per the MSRC FAQ: 'disclosure of certain memory address within kernel space'). Diff of storport.sys 10.0.22621.5415 -> .5547 (Jun 10 2025, KB5060999, Win11 22H2/23H2) confirms the fix: gated behind CFR flag Feature_1890851130, RaUnitStorageDiagnosticIoctl now calls a NEW RaidCallerIsAdmin() before producing the diagnostic buffer and bails out for non-admin callers. RaidCallerIsAdmin captures the caller's subject/security context (SeCaptureSubjectContext, SeLockSubjectContext) and calls SeTokenIsAdmin, then releases the context - so the kernel-address-bearing diagnostic data is only returned to administrators. No memory-corruption primitive is involved; this is purely a missing access-control check on an information-returning IOCTL.

Pre-patch version 10.0.22621.5415 Download

Post-patch version 10.0.22621.5547 Download

Function	Address	Change	Note
`RaUnitStorageDiagnosticIoctl`	`code change`	code (adds admin-only gate before returning the diagnostic buffer, CFR-gated)	Post (Feature_1890851130__private_IsEnabledDeviceUsage): calls RaidCallerIsAdmin() and only proceeds to RaBuildDiagnosticBufferForMiniport / RaidDiagnosticIoctlStatusToNtStatus when the caller is admin; non-admin callers return without the (kernel-address-bearing) diagnostic buffer. Pre: no caller privilege check on this path.
`RaidCallerIsAdmin`	`new function`	added (admin check helper)	New. SeCaptureSubjectContext + SeLockSubjectContext, then SeTokenIsAdmin(token), then SeUnlockSubjectContext + SeReleaseSubjectContext; returns whether the caller's token is an administrator. Used to gate the storage-diagnostic IOCTL.
`Feature_1890851130`	`gate`	added (CFR gate)	CFR flag gating the new admin check on the storage-diagnostic IOCTL; the original unchecked path ships when the flag is disabled.

View full diff report View RCA report

Attack Path

A low-privileged local caller invokes storport's storage-diagnostic IOCTL and receives kernel memory addresses

Derived from the patch delta: the checks added by the vendor identify which fields crossed a trust boundary unvalidated. Reachability and privilege are taken from the call chain in the RCA report.

Exploits & PoC

No public exploit or PoC has been linked for this CVE yet. When available, references are sourced from public repositories and may be unverified or non-functional — review carefully before use.

Detection Rules

No public Sigma or Nuclei detection rule has been mapped to this CVE yet. Coverage is concentrated on exploited / high-profile vulnerabilities; check SigmaHQ for updates.

Acknowledgments

Angelboy (@scwuaptx)

References

MSRC Advisory MITRE NVD