.NET Core Remote Code Execution Vulnerability
Priority MEDIUM 55CWE-94Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-94.
Summary
.NET Core Remote Code Execution Vulnerability
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.03454 89th percentileScored 2026-11-07
Fix Fixed Visual Studio 2019 for Mac (Microsoft): publicationMono 6.12.0 (Microsoft): publication+4 more products
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Microsoft | Visual Studio 2019 for Mac | 8.0.0 to before publication | publication | Patch available | CNA |
| Microsoft | Mono 6.12.0 | 6.12.0 to before publication | publication | Patch available | CNA |
| Microsoft | .NET Core 2.1 | 2.1 to before publication | publication | Patch available | CNA |
| Microsoft | .NET Core 3.1 | 3.1 to before publication | publication | Patch available | CNA |
| Microsoft | .NET 5.0 | 5.0.0 to before publication | publication | Patch available | CNA |
| — | System.Drawing.Common (NuGet) | 4.0.0 to before 4.7.2 | 4.7.2 | Patch available | GHSA-rxg9-xrhp-64gj |
| — | System.Drawing.Common (NuGet) | 5.0.0 to before 5.0.3 | 5.0.3 | Patch available | GHSA-rxg9-xrhp-64gj |
- Visual Studio 2019 for Mac VendorMicrosoft Affected 8.0.0 to before publication Fixed in publication Patch available CNA
- Mono 6.12.0 VendorMicrosoft Affected 6.12.0 to before publication Fixed in publication Patch available CNA
- .NET Core 2.1 VendorMicrosoft Affected 2.1 to before publication Fixed in publication Patch available CNA
- .NET Core 3.1 VendorMicrosoft Affected 3.1 to before publication Fixed in publication Patch available CNA
- .NET 5.0 VendorMicrosoft Affected 5.0.0 to before publication Fixed in publication Patch available CNA
- System.Drawing.Common (NuGet) Vendor— Affected 4.0.0 to before 4.7.2 Fixed in 4.7.2 Patch available GHSA-rxg9-xrhp-64gj
- System.Drawing.Common (NuGet) Vendor— Affected 5.0.0 to before 5.0.3 Fixed in 5.0.3 Patch available GHSA-rxg9-xrhp-64gj
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:* | 5.0 – 5.0.2 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:.net_core:*:*:*:*:*:*:*:* | 2.1 – 2.1.24; 3.1 – 3.1.11 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:mono:*:*:*:*:*:*:*:* | 6.12.0 to before 6.12.0.122 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:visual_studio_2019:-:*:*:*:*:macos:*:* | not specified by NVD | Vulnerable | Microsoft |
- cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:* Versions 5.0 – 5.0.2 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:.net_core:*:*:*:*:*:*:*:* Versions 2.1 – 2.1.24; 3.1 – 3.1.11 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:mono:*:*:*:*:*:*:*:* Versions 6.12.0 to before 6.12.0.122 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:visual_studio_2019:-:*:*:*:*:macos:*:* Versions not specified by NVD Vulnerable ·Microsoft
Remediation
- Fix · CNA Visual Studio 2019 for Mac (Microsoft) Fixed in publication
- Fix · CNA Mono 6.12.0 (Microsoft) Fixed in publication
- Fix · CNA .NET Core 2.1 (Microsoft) Fixed in publication
- Fix · CNA .NET Core 3.1 (Microsoft) Fixed in publication
- Fix · CNA .NET 5.0 (Microsoft) Fixed in publication
- Fix · GHSA-rxg9-xrhp-64gj System.Drawing.Common (NuGet) Fixed in 4.7.2 Advisory →
- Fix · GHSA-rxg9-xrhp-64gj System.Drawing.Common (NuGet) Fixed in 5.0.3 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
Not affected: 4 products
- .NET Core 2.1 on Red Hat Enterprise Linux
- .NET Core 3.1 on Red Hat Enterprise Linux
- .NET Core 5.0 on Red Hat Enterprise Linux
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2021-24112
- 2026-10-03 Alias added: GHSA-rxg9-xrhp-64gj
- 2026-10-07 Weakness changed · CISA ADP
- 2026-10-07 CISA SSVC decision points changed
References
More Microsoft .net vulnerabilities
- TI-2026-79288 Out-of-bounds write in Google Brotli decoder KEVCVSS 4.0CRITICAL 9.2
- TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
- TI-2023-19596 .NET and Visual Studio Denial of Service Vulnerability KEVCVSS 3.1HIGH 7.5
- TI-2023-19588 Microsoft QUIC Denial of Service Vulnerability CVSS 3.1HIGH 7.5
- TI-2024-14152 .NET and Visual Studio Denial of Service Vulnerability CVSS 3.1HIGH 7.5
- TI-2021-08380 .NET Core Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
Sources
- CVE-2021-24112 · CVE Program
- CVE-2021-24112 · NVD
- FIRST EPSS
- GHSA-rxg9-xrhp-64gj · GitHub Advisory Database · CC BY 4.0
- CVE-2021-24112 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences