# Windows Runtime Elevation of Privilege Vulnerability CVE record · `CVE-2020-1125` - **Identifiers:** `CVE-2020-1125` - **State:** Confirmed - **Severity:** CVSS 7.0 High - **Critical:** No - **CNA:** microsoft - **Technologies:** [Microsoft Windows 10 Version 1507](https://agentprime.io/advisories/technology/microsoft-windows-10-version-1507.md) · [Microsoft Windows 10 Version 1607](https://agentprime.io/advisories/technology/microsoft-windows-10-version-1607.md) · [Microsoft Windows 10 Version 1709](https://agentprime.io/advisories/technology/microsoft-windows-10-version-1709.md) · [Microsoft Windows 10 Version 1709 for 32-bit Systems](https://agentprime.io/advisories/technology/microsoft-windows-10-version-1709-for-32-bit-systems.md) · [Microsoft Windows 10 Version 1803](https://agentprime.io/advisories/technology/microsoft-windows-10-version-1803.md) · [Microsoft Windows 10 Version 1809](https://agentprime.io/advisories/technology/microsoft-windows-10-version-1809.md) · [Microsoft Windows 10 Version 1903 for 32-bit Systems](https://agentprime.io/advisories/technology/microsoft-windows-10-version-1903-for-32-bit-systems.md) · [Microsoft Windows 10 Version 1903 for ARM64-based Systems](https://agentprime.io/advisories/technology/microsoft-windows-10-version-1903-for-arm64-based-systems.md) · [Microsoft Windows 10 Version 1903 for x64-based Systems](https://agentprime.io/advisories/technology/microsoft-windows-10-version-1903-for-x64-based-systems.md) · [Microsoft Windows 10 Version 1909](https://agentprime.io/advisories/technology/microsoft-windows-10-version-1909.md) · [Microsoft Windows 8.1](https://agentprime.io/advisories/technology/microsoft-windows-8-1.md) · [Microsoft Windows Server 2016](https://agentprime.io/advisories/technology/microsoft-windows-server-2016.md) · [Microsoft Windows Server 2016 (Server Core installation)](https://agentprime.io/advisories/technology/microsoft-windows-server-2016-server-core-installation.md) · [Microsoft Windows Server 2019](https://agentprime.io/advisories/technology/microsoft-windows-server-2019.md) · [Microsoft Windows Server 2019 (Server Core installation)](https://agentprime.io/advisories/technology/microsoft-windows-server-2019-server-core-installation.md) · [Microsoft Windows Server, version 1803 (Server Core Installation)](https://agentprime.io/advisories/technology/microsoft-windows-server-version-1803-server-core-installation.md) · [Microsoft Windows Server, version 1903 (Server Core installation)](https://agentprime.io/advisories/technology/microsoft-windows-server-version-1903-server-core-installation.md) · [Microsoft Windows Server, version 1909 (Server Core installation)](https://agentprime.io/advisories/technology/microsoft-windows-server-version-1909-server-core-installation.md) - **Published:** 21 May 2020 - **Updated:** 19 Aug 2026 - **Reviewed by a person:** No Published by the CVE Program (CNA: microsoft) at 21 May 2020, 22:53 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. ## Affected products, as the CNA wrote them - Vendor: Microsoft. Product: Windows 10 Version 1507. - affected: `10.0.10240.0 to before publication` (custom) - Vendor: Microsoft. Product: Windows 10 Version 1607. - affected: `10.0.14393.0 to before publication` (custom) - Vendor: Microsoft. Product: Windows 10 Version 1709. - affected: `10.0.0 to before publication` (custom) - Vendor: Microsoft. Product: Windows 10 Version 1709 for 32-bit Systems. - affected: `10.0.0 to before publication` (custom) - Vendor: Microsoft. Product: Windows 10 Version 1803. - affected: `10.0.0 to before publication` (custom) - Vendor: Microsoft. Product: Windows 10 Version 1809. - affected: `10.0.17763.0 to before publication` (custom) - Vendor: Microsoft. Product: Windows 10 Version 1809. - affected: `10.0.0 to before publication` (custom) - Vendor: Microsoft. Product: Windows 10 Version 1903 for 32-bit Systems. - affected: `10.0.0 to before publication` (custom) - Vendor: Microsoft. Product: Windows 10 Version 1903 for ARM64-based Systems. - affected: `10.0.0 to before publication` (custom) - Vendor: Microsoft. Product: Windows 10 Version 1903 for x64-based Systems. - affected: `10.0.0 to before publication` (custom) - Vendor: Microsoft. Product: Windows 10 Version 1909. - affected: `10.0.0 to before publication` (custom) - Vendor: Microsoft. Product: Windows 8.1. - affected: `6.3.0 to before publication` (custom) - Vendor: Microsoft. Product: Windows Server 2016. - affected: `10.0.14393.0 to before publication` (custom) - Vendor: Microsoft. Product: Windows Server 2016 (Server Core installation). - affected: `10.0.14393.0 to before publication` (custom) - Vendor: Microsoft. Product: Windows Server 2019. - affected: `10.0.17763.0 to before publication` (custom) - Vendor: Microsoft. Product: Windows Server 2019 (Server Core installation). - affected: `10.0.17763.0 to before publication` (custom) - Vendor: Microsoft. Product: Windows Server, version 1803 (Server Core Installation). - affected: `10.0.0 to before publication` (custom) - Vendor: Microsoft. Product: Windows Server, version 1903 (Server Core installation). - affected: `10.0.0 to before publication` (custom) - Vendor: Microsoft. Product: Windows Server, version 1909 (Server Core installation). - affected: `10.0.0 to before publication` (custom) ## Not analysed yet We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter. ## Severity and exploitation - 7.0 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C`, from CNA (microsoft) - **CISA KEV:** Not listed. - **EPSS:** 0.023, the 83rd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days. ## Timeline This record came from the full history of the CVE Program, published 21 May 2020. New records show when each source confirmed them. ## Sources - [CVE List: CVE-2020-1125](https://www.cve.org/CVERecord?id=CVE-2020-1125) - [NVD: CVE-2020-1125](https://nvd.nist.gov/vuln/detail/CVE-2020-1125) ### References from the CNA - (vendor-advisory, patch) Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description. ## Check whether this affects you This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run. - With the agentprime MCP server (), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: - As JSON: - Everything that needs attention now: --- The web page: . Everything for agents: .