// For flags

CVE-2020-3133

Cisco Email Security Appliance Content Filter Bypass Vulnerability

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

A vulnerability in the email message scanning of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass configured filters on the device. The vulnerability is due to improper validation of incoming emails. An attacker could exploit this vulnerability by sending a crafted email message to a recipient protected by the ESA. A successful exploit could allow the attacker to bypass the configured content filters, which could allow malicious content to pass through the device.

Una vulnerabilidad en el escaneo de mensajes de correo electrónico de Cisco AsyncOS Software para Cisco Email Security Appliance (ESA), podría permitir a un atacante remoto no autenticado omitir los filtros configurados en el dispositivo. La vulnerabilidad es debido a una comprobación inapropiada de los correos electrónicos entrantes. Un atacante podría explotar esta vulnerabilidad mediante el envío de un mensaje de correo electrónico diseñado hacia un destinatario protegido por la ESA. Una explotación con éxito podría permitirle al atacante omitir los filtros de contenido configurados, lo que podría permitir que el contenido malicioso pase por medio del dispositivo

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2019-12-12 CVE Reserved
  • 2020-09-23 CVE Published
  • 2023-06-08 EPSS Updated
  • 2024-11-13 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Cisco
Search vendor "Cisco"
 Email Security Appliance
Search vendor "Cisco" for product "Email Security Appliance"
 < 13.0
Search vendor "Cisco" for product "Email Security Appliance" and version " < 13.0"
-
Affected