CVE-2021-31207
Microsoft Exchange Server Security Feature Bypass Vulnerability
CVSS
—
Sin CVSS
EPSS
99.8%
p100
KEV
SÍ
3 nov 2021
Exploit Today
80
0-100
Publicado: — · Última mod.: —
99.8%EPSS · 30 días99.8%
2026-08-022026-08-30
Producto
Microsoft / Exchange Server
Vulnerabilidad
Microsoft Exchange Server Security Feature Bypass Vulnerability
Añadido a KEV
3 nov 2021
Remediar antes de
17 nov 2021
Uso conocido en ransomware
Sí
Descripción resumida
Microsoft Exchange Server contains an unspecified vulnerability that allows for security feature bypass.
Acción requerida
Apply updates per vendor instructions.
Notas
https://nvd.nist.gov/vuln/detail/CVE-2021-31207
CVECVSSEPSSKEVRExplotTítuloVis.
CVE-2023-215298.8 ALT99.1%
KEV—80Microsoft Exchange Server Deserialization of Untrusted Data Vulnerability11dCVE-2022-410808.8 ALT99.5%
KEV—80Microsoft Exchange Server Privilege Escalation Vulnerability21dCVE-2021-345239.0 CRÍ100.0%
KEV—80Microsoft Exchange Server Privilege Escalation Vulnerability20dCVE-2021-344739.1 CRÍ100.0%
KEV—80Microsoft Exchange Server Remote Code Execution Vulnerability20dCVE-2021-337667.3 ALT99.9%
KEV—80Microsoft Exchange Server Information Disclosure20dCVE-2021-311967.2 ALT98.9%
KEV—80Microsoft Exchange Server Information Disclosure Vulnerability20d