Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2021-1534

A vulnerability in the antispam protection mechanisms of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass the URL reputation filters on an affected device. This vulnerability is due to improper processing of URLs. An attacker could exploit this vulnerability by crafting a URL in a particular way. A successful exploit could allow the attacker to bypass the URL reputation filters that are configured for an affected device, which could allow malicious URLs to pass through the device.

Published

2021-10-06T20:15:07.657

Last Modified

2024-11-21T05:44:34.010

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.8 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:P/A:N

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: PARTIAL
  • Availability Impact: NONE
Exploitability Score

10.0

Impact Score

2.9

Weaknesses
  • Type: Secondary
    CWE-20
  • Type: Primary
    NVD-CWE-noinfo
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System cisco asyncos < 14.0.1 Yes
Hardware cisco email_security_appliance_c170 - No
Hardware cisco email_security_appliance_c190 - No
Hardware cisco email_security_appliance_c380 - No
Hardware cisco email_security_appliance_c390 - No
Hardware cisco email_security_appliance_c680 - No
Hardware cisco email_security_appliance_c690 - No
Hardware cisco email_security_appliance_c690x - No
References