# CVE-2020-0606: Remote code execution in Microsoft.WindowsDesktop.App.Ref > An attacker can execute arbitrary code by exploiting a failure in .NET software to check file source markup. - **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** A user has to click or open something - **Fix available:** Yes - **Published:** 14 Jan 2020 - **Updated:** 4 Aug 2024 - **Also known as:** GHSA-r4mw-gxf7-vxr9 ## What is CVE-2020-0606? CVE-2020-0606 is a high-severity code injection vulnerability in Microsoft .Net Framework, published on 14 Jan 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link. ### Official description A remote code execution vulnerability exists in .NET software when the software fails to check the source markup of a file.An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user, aka '.NET Framework Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2020-0605. Weakness: CWE-20 (Improper Input Validation) ## Which versions are affected by CVE-2020-0606? 12 open source packages ship an affected version, including Microsoft.WindowsDesktop.App.Ref, Microsoft.WindowsDesktop.App.Runtime.win-x64 and Microsoft.WindowsDesktop.App.Runtime.win-x86. It affects 2 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `Microsoft.WindowsDesktop.App.Ref` | NuGet | From 3.0.1 | 3.0.2 | | `Microsoft.WindowsDesktop.App.Ref` | NuGet | From 3.0.1 | 3.0.2 | | `Microsoft.WindowsDesktop.App.Ref` | NuGet | From 3.1.0 | 3.1.1 | | `Microsoft.WindowsDesktop.App.Ref` | NuGet | From 3.1.0 | 3.1.1 | | `Microsoft.WindowsDesktop.App.Runtime.win-x64` | NuGet | From 3.0.0 | 3.0.2 | | `Microsoft.WindowsDesktop.App.Runtime.win-x64` | NuGet | From 3.0.0 | 3.0.2 | | `Microsoft.WindowsDesktop.App.Runtime.win-x64` | NuGet | From 3.1.0 | 3.1.11 | | `Microsoft.WindowsDesktop.App.Runtime.win-x64` | NuGet | From 3.1.0 | 3.1.11 | | `Microsoft.WindowsDesktop.App.Runtime.win-x86` | NuGet | From 3.0.0 | 3.0.2 | | `Microsoft.WindowsDesktop.App.Runtime.win-x86` | NuGet | From 3.0.0 | 3.0.2 | | `Microsoft.WindowsDesktop.App.Runtime.win-x86` | NuGet | From 3.1.0 | 3.1.11 | | `Microsoft.WindowsDesktop.App.Runtime.win-x86` | NuGet | From 3.1.0 | 3.1.11 | Products: Microsoft .Net Core, Microsoft .Net Framework. ## How do I fix CVE-2020-0606? Upgrade Microsoft.WindowsDesktop.App.Ref to a fixed version for your release line: 3.0.2 or 3.1.1. ## Is CVE-2020-0606 being exploited? There is no known exploitation of CVE-2020-0606 in the wild and no public exploit code. ## Other vulnerabilities in Microsoft .Net Framework - [CVE-2020-1147](https://insights.sbomify.com/CVE-2020-1147/): Microsoft .NET Framework, SharePoint, and Visual Studio Remote Code Execution (high 7.8, exploited in the wild) - [CVE-2020-0605](https://insights.sbomify.com/CVE-2020-0605/): Code injection in .NET Core (high 8.8) - [CVE-2019-1301](https://insights.sbomify.com/CVE-2019-1301/): High severity vulnerability that affects System.Management.Automation (high 7.5) - [CVE-2019-0820](https://insights.sbomify.com/CVE-2019-0820/): Regular Expression Denial of Service in System.Text.RegularExpressions (high 7.5) - [CVE-2019-0980](https://insights.sbomify.com/CVE-2019-0980/): Denial of service in ASP.NET Core (high 7.5) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2020-0606 and fix it if it is affected. What it is: CVE-2020-0606 is a high-severity code injection vulnerability in Microsoft .Net Framework, published on 14 Jan 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link. Exploitation: There is no known exploitation of CVE-2020-0606 in the wild and no public exploit code. Affected packages and fixed versions: - Microsoft.WindowsDesktop.App.Ref (NuGet): affected from 3.0.1; fixed in 3.0.2 - Microsoft.WindowsDesktop.App.Ref (NuGet): affected from 3.0.1; fixed in 3.0.2 - Microsoft.WindowsDesktop.App.Ref (NuGet): affected from 3.1.0; fixed in 3.1.1 - Microsoft.WindowsDesktop.App.Ref (NuGet): affected from 3.1.0; fixed in 3.1.1 - Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet): affected from 3.0.0; fixed in 3.0.2 - Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet): affected from 3.0.0; fixed in 3.0.2 - Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet): affected from 3.1.0; fixed in 3.1.11 - Microsoft.WindowsDesktop.App.Runtime.win-x64 (NuGet): affected from 3.1.0; fixed in 3.1.11 - Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet): affected from 3.0.0; fixed in 3.0.2 - Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet): affected from 3.0.0; fixed in 3.0.2 - Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet): affected from 3.1.0; fixed in 3.1.11 - Microsoft.WindowsDesktop.App.Runtime.win-x86 (NuGet): affected from 3.1.0; fixed in 3.1.11 Task: 1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies. 2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it. 3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead. 4. Run the tests and summarise what changed and why. 5. If nothing in the project is affected, say so and change nothing. Reference: https://insights.sbomify.com/CVE-2020-0606/ (Markdown: https://insights.sbomify.com/CVE-2020-0606/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2020-0606 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-0606 - OSV: https://osv.dev/vulnerability/CVE-2020-0606 --- From sbomify Insights: https://insights.sbomify.com/CVE-2020-0606/ Summaries are generated and may contain mistakes; the official description above is the record.