CVE-2020-0646
Status: AnalyzedCritical (9.8)⚠ Active exploitation
A remote code execution vulnerability exists when the Microsoft .NET Framework fails to validate input properly, aka '.NET Framework Remote Code Execution Injection Vulnerability'.
CVSS
- Version: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Base score: 9.8
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 99%
- Percentile among all scored CVEs: 100
- Score date: 10/2/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
CISA KEV — actively exploited
- Added to catalog: 11/3/2021
- Remediation due date: 5/3/2022
- Known ransomware use: Unknown
🎯 ATT&CK techniques
How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.
- Exploitation
T1190Exploit Public-Facing Applicationinitial access95 % - Primary impact
T1059.001PowerShellexecution90 % - Secondary impact
T1565.001Stored Data Manipulationimpact70 %
Vector AV:N/AC:L/PR:N sin interacción usuario confirma T1190. Validación insuficiente en .NET permite RCE remota. Impactos: ejecución de comandos (CVSS I:H), persistencia potencial y manipulación de datos por acceso crítico (C:H/I:H).
Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.
🛡️ ATT&CK mitigations that cover these techniques
Affected technologies (1)
CWEs
- CWE-91
- CWE-91
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
Raw JSON (NVD)
Show
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