CVE-2019-1921 MEDIUM

CVE-2019-1921: Cisco Email Security Appliance Content Filter Bypass Vulnerability

Vendor Cisco
Product Cisco Email Security Appliance (ESA)
Weakness CWE-20 · Input validation
Published July 6, 2019
Last update November 19, 2024

CVSS base score

5.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity Low

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

What the vulnerability does

01Description

A vulnerability in the attachment scanning of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass configured content filters on the device. The vulnerability is due to improper input validation of the email body. An attacker could exploit this vulnerability by naming a malicious attachment with a specific pattern. A successful exploit could allow the attacker to bypass configured content filters that would normally block the attachment.

Key dates

02Disclosure timeline

July 6, 2019 CVE published
November 19, 2024 Record updated