Windows Hello Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Hello allows an authorized attacker to elevate privileges locally.
- Published
- Sep 8, 2026
- Updated
- Sep 29, 2026
- EPSS
- 0.2% · 10th percentile
- CWE
- CWE-362
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Report tools
Action score
30
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · microsoft
- 7.5
- NVD has not scored this yet; the score shown is the CNA’s.
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| microsoft | windows 10 21h2 | cpe:2.3:o:microsoft:windows_10_21h2 |
| microsoft | windows 10 22h2 | cpe:2.3:o:microsoft:windows_10_22h2 |
| microsoft | windows 11 23h2 | cpe:2.3:o:microsoft:windows_11_23h2 |
| microsoft | windows 11 24h2 | cpe:2.3:o:microsoft:windows_11_24h2 |
| microsoft | windows 11 25h2 | cpe:2.3:o:microsoft:windows_11_25h2 |
| microsoft | windows 11 26h1 | cpe:2.3:o:microsoft:windows_11_26h1 |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- microsoft windows 10 21h2before 10.0.19044.7725
- microsoft windows 10 22h2before 10.0.19045.7725
- microsoft windows 11 23h2before 10.0.22631.7582
- microsoft windows 11 24h2before 10.0.26100.9445
- microsoft windows 11 25h2before 10.0.26200.9445
- microsoft windows 11 26h1before 10.0.28000.2954
Versions reported by the vendor
Affected version ranges reported by the assigning authority (microsoft). Independent of NVD's CPE analysis and usually ahead of it.
Microsoft Windows 10 Version 21H2
- 10.0.19044.0 and later · before 10.0.19044.7725affected
Microsoft Windows 10 Version 22H2
- 10.0.19045.0 and later · before 10.0.19045.7725affected
Microsoft Windows 11 version 23H2
- 10.0.22631.0 and later · before 10.0.22631.7582affected
Microsoft Windows 11 Version 23H2
- 10.0.22631.0 and later · before 10.0.22631.7582affected
Microsoft Windows 11 Version 24H2
- 10.0.26100.0 and later · before 10.0.26100.9445affected
Microsoft Windows 11 Version 25H2
- 10.0.26200.0 and later · before 10.0.26200.9445affected
Microsoft Windows 11 version 26H1
- 10.0.28000.0 and later · before 10.0.28000.2954affected
Same product
microsoft: all recordsOther highest-scoring records for the same primary product.
- CVE-2025-21333Windows Hyper-V NT Kernel Integration VSP Elevation of Privilege VulnerabilityKEV64This week
- CVE-2025-21335Windows Hyper-V NT Kernel Integration VSP Elevation of Privilege VulnerabilityKEV61This week
- CVE-2025-21334Windows Hyper-V NT Kernel Integration VSP Elevation of Privilege VulnerabilityKEV61This week
- CVE-2023-38186Windows Mobile Device Management Elevation of Privilege Vulnerability39Monitor
- CVE-2026-42904Windows TCP/IP Elevation of Privilege Vulnerability38Monitor
- CVE-2023-38148Internet Connection Sharing (ICS) Remote Code Execution Vulnerability37Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Windows 10 Version 21H2 for 32-bit Systems | 10.0.19044.7725 · KB5122878 | Microsoft (MSRC) |
| Windows 10 Version 21H2 for ARM64-based Systems | 10.0.19044.7725 · KB5122878 | Microsoft (MSRC) |
| Windows 10 Version 21H2 for x64-based Systems | 10.0.19044.7725 · KB5122878 | Microsoft (MSRC) |
| Windows 10 Version 22H2 for 32-bit Systems | 10.0.19045.7725 · KB5122878 | Microsoft (MSRC) |
| Windows 10 Version 22H2 for ARM64-based Systems | 10.0.19045.7725 · KB5122878 | Microsoft (MSRC) |
| Windows 10 Version 22H2 for x64-based Systems | 10.0.19045.7725 · KB5122878 | Microsoft (MSRC) |
| Windows 11 Version 23H2 for ARM64-based Systems | 10.0.22631.7582 · KB5122880 | Microsoft (MSRC) |
| Windows 11 Version 23H2 for x64-based Systems | 10.0.22631.7582 · KB5122880 | Microsoft (MSRC) |
| Windows 11 Version 24H2 for ARM64-based Systems | 10.0.26100.9445 · KB5124008 | Microsoft (MSRC) |
| Windows 11 Version 24H2 for x64-based Systems | 10.0.26100.9445 · KB5124008 | Microsoft (MSRC) |
| Windows 11 Version 25H2 for ARM64-based Systems | 10.0.26200.9445 · KB5124008 | Microsoft (MSRC) |
| Windows 11 Version 25H2 for x64-based Systems | 10.0.26200.9445 · KB5124008 | Microsoft (MSRC) |
| Windows 11 Version 26H1 for ARM64-based Systems | 10.0.28000.2954 · KB5124012 | Microsoft (MSRC) |
| Windows 11 version 26H1 for x64-based Systems | 10.0.28000.2954 · KB5124012 | Microsoft (MSRC) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2026-697990 days apartWindows Hello Elevation of Privilege Vulnerability31Monitor
- CVE-2026-26172147 days apartWindows Push Notifications Elevation of Privilege Vulnerability31Monitor
- CVE-2025-55228364 days apartWindows Graphics Component Remote Code Execution Vulnerability31Monitor
- CVE-2026-688240 days apartConnected User Experiences and Telemetry Elevation of Privilege Vulnerability28Monitor
- CVE-2026-694480 days apartWindows Bluetooth Service Elevation of Privilege Vulnerability28Monitor
- CVE-2026-5912628 days apartWindows Event Logging Service Elevation of Privilege Vulnerability28Monitor
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- Administrator privileges are required.
- No user action is required.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
Impact can extend beyond the vulnerable component (scope changes).
- Attack vector
- Local
- Attack complexity
- High
- Privileges required
- High
- User interaction
- None
- Scope
- Changed
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')CVSS vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
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References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.