CVE-2020-0646 KEV EXPLOIT
9.8
CRITICAL · CVSS 3.1 · EPSS 99.2% (pctl 100)
Patch first
On CISA KEV — known exploited in the wild, due 2022-05-03.
Description
A remote code execution vulnerability exists when the Microsoft .NET Framework fails to validate input properly, aka '.NET Framework Remote Code Execution Injection Vulnerability'.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 99.22% — more likely to be exploited than 100% of all CVEs |
| Weakness | CWE-91 |
| On CISA KEV | yes — remediate by 2022-05-03 |
| Public exploit | yes |
| Published | 2020-01-14 |
| Last modified | 2026-06-17 |
CISA KEV
| Name | Microsoft .NET Framework Remote Code Execution Vulnerability |
|---|---|
| Added | 2021-11-03 |
| Due | 2022-05-03 |
| Vendor / product | Microsoft / .NET Framework |
| Ransomware use | none reported |
Affected (15)
| Vendor | Product |
|---|---|
| microsoft | .net framework |
| microsoft | windows 10 1507 |
| microsoft | windows 10 1607 |
| microsoft | windows 10 1709 |
| microsoft | windows 10 1803 |
| microsoft | windows 10 1809 |
| microsoft | windows 10 1903 |
| microsoft | windows 10 1909 |
| microsoft | windows 7 |
| microsoft | windows 8.1 |
| microsoft | windows rt 8.1 |
| microsoft | windows server 2008 |
| microsoft | windows server 2012 |
| microsoft | windows server 2016 |
| microsoft | windows server 2019 |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | SharePoint Workflows - XOML Injection (Metasploit) | 2020-03-31 |
References
- http://packetstormsecurity.com/files/156930/SharePoint-Workflows-XOML-Injection.html
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0646
- http://packetstormsecurity.com/files/156930/SharePoint-Workflows-XOML-Injection.html
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0646
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-0646
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