Vulnerability · Published Apr 14, 2026 · Assigned by microsoft
CVE-2026-27928Windows Hello Security Feature Bypass Vulnerability
High 8.7
In plain English
A high-severity improper input validation in Windows Server 2016 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities).
Severity (CVSS 3.1)8.7High
Exploit odds (30 days)0.4%top 64.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Improper input validation in Windows Hello allows an unauthorized attacker to bypass a security feature over a network.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows Server 2016 | 10.0.14393.0 – before 10.0.14393.9060 |
| Microsoft | Windows Server 2016 (Server Core installation) | 10.0.14393.0 – before 10.0.14393.9060 |
| Microsoft | Windows Server 2019 | 10.0.17763.0 – before 10.0.17763.8644 |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 – before 10.0.17763.8644 |
| Microsoft | Windows Server 2022 | 10.0.20348.0 – before 10.0.20348.5020 |
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) | 10.0.25398.0 – before 10.0.25398.2274 |
| Microsoft | Windows Server 2025 | 10.0.26100.0 – before 10.0.26100.32690 |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 – before 10.0.26100.32690 |
Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C
References
- Windows Hello Security Feature Bypass Vulnerability vendor-advisory, patch