CVE-2020-0646
Microsoft .NET Framework: Remote Code Execution
As of , CVE-2020-0646 in Microsoft .NET Framework is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch this week.
- Exploited
- Yes: CISA listed it on 3 November 2021
- US federal deadline
- 3 May 2022181 days after CISA listed it. US federal civilian agencies must fix it by then.
- Used in ransomware campaigns
- Not known to CISA
- EPSS score
- 0.99Higher than 99% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
- EPSS when listed
- Not availableCISA listed it before 4 February 2022, where the EPSS files we read begin.
- Public exploit
- 1 Metasploit module and 1 Exploit-DB entry (1 verified)
- Fix
- No vendor link in CISA's entry
What CISA says to do
Apply updates per vendor instructions.
CISA's required action
What the flaw is
Microsoft .NET Framework contains an improper input validation vulnerability that allows for remote code execution.
CISA's 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'.
The CVE record's description, from microsoft
- CVE published
- 14 January 2020
- Assigned by
- microsoft
- CVSS
- 9.8 Critical (CVSS 3.1, from CISA-ADP)
- CWE-91
- XML Injection (aka Blind XPath Injection)
- CISA SSVC, exploitation
- active
- CISA SSVC, automatable
- yes
- CISA SSVC, technical impact
- total
Timeline
- The CVE record was published.
- Exploit-DB published an exploit (EDB-ID 48275).
- CISA added it to its list of exploited vulnerabilities.
- The US federal deadline to fix it.
Public exploits
Facts from Metasploit's module list and Exploit-DB's index; we never copy exploit code.
- Metasploit: SharePoint Workflows XOML Injectionexploit module, rank excellent
- Exploit-DB: SharePoint Workflows - XOML Injection (Metasploit)EDB-ID 48275, verified by Exploit-DB, 31 March 2020
.NET Framework: other exploited entries
| Vulnerability | Product | Our group | Listed | Deadline | EPSS |
|---|---|---|---|---|---|
| CVE-2024-29059Information Disclosure | Microsoft .NET Framework | Patch this weekEPSS 0.99 | 0.99 | ||
| CVE-2017-8759Remote Code Execution | Microsoft .NET Framework | Patch this weekEPSS 0.89 | 0.89 |
Read further
- CVE recordcve.org
- NVD entrynvd.nist.gov
- CISA's catalogcisa.gov
- EPSS for this CVEapi.first.org