MITRE: CVE-2026-6727 TPM 2.0 RSA OAEP Timing Side-Channel Vulnerability
CVE-2026-6727 is fixed in 24 products on 1 platform, first by KB5120418, released August 11, 2026. It is not reported as exploited. Patch Radar priority: Routine.
<p><a href="https://www.cve.org/CVERecord?id=CVE-2026-6727">CVE-2026-6727</a> is an Information Disclosure vulnerability in the TPM 2.0 reference implementation involving an RSA OAEP timing side channel. MITRE assigned this CVE on behalf of the Trusted Computing Group. This document incorporates updates to Microsoft Windows that address this vulnerability.</p> <p>Please see <a href="https://www.cve.org/CVERecord?id=CVE-2026-6727">CVE-2026-6727</a> for more information.</p>
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Microsoft | |||
| Windows 10 Version 1607 for 32-bit Systems | 14393.9418 | KB5120418 | Aug 11, 2026 |
| Windows 10 Version 1607 for x64-based Systems | 14393.9418 | KB5120418 | Aug 11, 2026 |
| Windows 10 Version 1809 for 32-bit Systems | 17763.9121 | KB5120238 | Aug 11, 2026 |
| Windows 10 Version 1809 for x64-based Systems | 17763.9121 | KB5120238 | Aug 11, 2026 |
| Windows 10 Version 21H2 for 32-bit Systems | KB5120249 | Aug 11, 2026 | |
| Windows 10 Version 21H2 for ARM64-based Systems | KB5120249 | Aug 11, 2026 | |
| Windows 10 Version 21H2 for x64-based Systems | KB5120249 | Aug 11, 2026 | |
| Windows 10 Version 22H2 for 32-bit Systems | KB5120249 | Aug 11, 2026 | |
| Windows 10 Version 22H2 for ARM64-based Systems | KB5120249 | Aug 11, 2026 | |
| Windows 10 Version 22H2 for x64-based Systems | KB5120249 | Aug 11, 2026 | |
| Windows 11 Version 23H2 for ARM64-based Systems | 22631.7517 | KB5120240 | Aug 11, 2026 |
| Windows 11 Version 23H2 for x64-based Systems | 22631.7517 | KB5120240 | Aug 11, 2026 |
| Windows 11 Version 24H2 for ARM64-based Systems | KB5121003 | Aug 11, 2026 | |
| Windows 11 Version 24H2 for ARM64-based Systems | KB5120994 | Aug 11, 2026 | |
| Windows 11 Version 24H2 for x64-based Systems | KB5121003 | Aug 11, 2026 | |
| Windows 11 Version 24H2 for x64-based Systems | KB5120994 | Aug 11, 2026 | |
| Windows 11 Version 25H2 for ARM64-based Systems | KB5121003 | Aug 11, 2026 | |
| Windows 11 Version 25H2 for ARM64-based Systems | KB5120994 | Aug 11, 2026 | |
| Windows 11 Version 25H2 for x64-based Systems | KB5121003 | Aug 11, 2026 | |
| Windows 11 Version 25H2 for x64-based Systems | KB5120994 | Aug 11, 2026 | |
| Windows 11 Version 26H1 for ARM64-based Systems | 28000.2704 | KB5121000 | Aug 11, 2026 |
| Windows 11 version 26H1 for x64-based Systems | 28000.2704 | KB5121000 | Aug 11, 2026 |
| Windows Server 2019 | 17763.9121 | KB5120238 | Aug 11, 2026 |
| Windows Server 2019 (Server Core installation) | 17763.9121 | KB5120238 | Aug 11, 2026 |
| Windows Server 2022 | KB5123303 | Aug 11, 2026 | |
| Windows Server 2022 | 20348.5440 | KB5120229 | Aug 11, 2026 |
| Windows Server 2022 | 20348.5499 | KB5120242 | Aug 11, 2026 |
| Windows Server 2022 (Server Core installation) | KB5123303 | Aug 11, 2026 | |
| Windows Server 2022 (Server Core installation) | 20348.5440 | KB5120229 | Aug 11, 2026 |
| Windows Server 2022 (Server Core installation) | 20348.5499 | KB5120242 | Aug 11, 2026 |
| Windows Server 2025 | 26100.33222 | KB5120228 | Aug 11, 2026 |
| Windows Server 2025 | 26100.33296 | KB5120233 | Aug 11, 2026 |
| Windows Server 2025 (Server Core installation) | 26100.33222 | KB5120228 | Aug 11, 2026 |
| Windows Server 2025 (Server Core installation) | 26100.33296 | KB5120233 | Aug 11, 2026 |
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