# ASP.NET Core Elevation of Privilege Vulnerability CVE record · `CVE-2026-114148` - **Identifiers:** `CVE-2026-114148` - **State:** Confirmed - **Severity:** CVSS 7.8 High - **Critical:** No - **CNA:** microsoft - **Weakness (CWE):** [CWE-276](https://cwe.mitre.org/data/definitions/276.html) - **Tags:** [Broken access control](https://agentprime.io/advisories/tag/access-control.md) - **Technologies:** [Microsoft .NET 10.0 installed on Linux](https://agentprime.io/advisories/technology/microsoft-net-10-0-installed-on-linux.md) · [Microsoft .NET 10.0 installed on Mac OS](https://agentprime.io/advisories/technology/microsoft-net-10-0-installed-on-mac-os.md) · [Microsoft .NET 10.0 installed on Windows](https://agentprime.io/advisories/technology/microsoft-net-10-0-installed-on-windows.md) · [Microsoft .NET 11.0 installed on Linux](https://agentprime.io/advisories/technology/microsoft-net-11-0-installed-on-linux.md) · [Microsoft .NET 11.0 installed on Mac OS](https://agentprime.io/advisories/technology/microsoft-net-11-0-installed-on-mac-os.md) · [Microsoft .NET 11.0 installed on Windows](https://agentprime.io/advisories/technology/microsoft-net-11-0-installed-on-windows.md) · [Microsoft .NET 8.0 installed on Linux](https://agentprime.io/advisories/technology/microsoft-net-8-0-installed-on-linux.md) · [Microsoft .NET 8.0 installed on Mac OS](https://agentprime.io/advisories/technology/microsoft-net-8-0-installed-on-mac-os.md) · [Microsoft .NET 8.0 installed on Windows](https://agentprime.io/advisories/technology/microsoft-net-8-0-installed-on-windows.md) · [Microsoft .NET 9.0 installed on Linux](https://agentprime.io/advisories/technology/microsoft-net-9-0-installed-on-linux.md) · [Microsoft .NET 9.0 installed on Mac OS](https://agentprime.io/advisories/technology/microsoft-net-9-0-installed-on-mac-os.md) · [Microsoft .NET 9.0 installed on Windows](https://agentprime.io/advisories/technology/microsoft-net-9-0-installed-on-windows.md) · [Microsoft .NET source-build Linux tarballs (all archive types)](https://agentprime.io/advisories/technology/microsoft-net-source-build-linux-tarballs-all-archive-types.md) · [ASP.NET Core runtime and targeting-pack Linux tarballs (Microsoft-published)](https://agentprime.io/advisories/technology/asp-net-core-runtime-and-targeting-pack-linux-tarballs-microsoft-published.md) - **Published:** 29 Oct 2026 - **Updated:** 31 Oct 2026 - **Reviewed by a person:** No Published by the CVE Program (CNA: microsoft) at 29 Oct 2026, 15:21 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: .NET 10.0 installed on Linux. - affected: `10.0.0 to before 10.0.403` (custom) - Vendor: Microsoft. Product: .NET 10.0 installed on Mac OS. - affected: `10.0.0 to before 10.0.403` (custom) - Vendor: Microsoft. Product: .NET 10.0 installed on Windows. - affected: `10.0.0 to before 10.0.403` (custom) - Vendor: Microsoft. Product: .NET 11.0 installed on Linux. - affected: `11.0.0-preview.1 to before 11.0.100-rc.3` (custom) - Vendor: Microsoft. Product: .NET 11.0 installed on Mac OS. - affected: `11.0.0-preview.1 to before 11.0.100-rc.3` (custom) - Vendor: Microsoft. Product: .NET 11.0 installed on Windows. - affected: `11.0.0-preview.1 to before 11.0.100-rc.3` (custom) - Vendor: Microsoft. Product: .NET 8.0 installed on Linux. - affected: `8.0.0 to before 8.0.427` (custom) - Vendor: Microsoft. Product: .NET 8.0 installed on Mac OS. - affected: `8.0.0 to before 8.0.427` (custom) - Vendor: Microsoft. Product: .NET 8.0 installed on Windows. - affected: `8.0.0 to before 8.0.427` (custom) - Vendor: Microsoft. Product: .NET 9.0 installed on Linux. - affected: `9.0.0 to before 9.0.320` (custom) - Vendor: Microsoft. Product: .NET 9.0 installed on Mac OS. - affected: `9.0.0 to before 9.0.320` (custom) - Vendor: Microsoft. Product: .NET 9.0 installed on Windows. - affected: `9.0.0 to before 9.0.320` (custom) - Vendor: Microsoft. Product: .NET source-build Linux tarballs (all archive types). - affected: `8.0.100 to before 10.0.403-servicing.26523.112` (custom) - Vendor: Microsoft. Product: ASP.NET Core runtime and targeting-pack Linux tarballs (Microsoft-published). - affected: `8.0.0 to before 9.0.22` (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 - 7.8 High, CVSS 3.1: `CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C`, from CNA (microsoft) - **CISA KEV:** Not listed. - **EPSS:** 0.0036, the 29th percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days. ## Timeline - 29 Oct 2026, 15:21 UTC: [Confirmed by the CVE List](https://www.cve.org/CVERecord?id=CVE-2026-114148) - 31 Oct 2026, 16:31 UTC: First seen by agentprime ## Sources - [CVE List: CVE-2026-114148](https://www.cve.org/CVERecord?id=CVE-2026-114148) - [NVD: CVE-2026-114148](https://nvd.nist.gov/vuln/detail/CVE-2026-114148) ### 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: .