VULNERABILITY INTELLIGENCE

CVE-2022-20784

CVSS score5.8 MEDIUM
EPSS probability0.93%
CISA KEVNot currently listed
Published2022-04-06
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Description

A vulnerability in the Web-Based Reputation Score (WBRS) engine of Cisco AsyncOS Software for Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to bypass established web request policies and access blocked content on an affected device. This vulnerability is due to incorrect handling of certain character combinations inserted into a URL. An attacker could exploit this vulnerability by sending crafted URLs to be processed by an affected device. A successful exploit could allow the attacker to bypass the web proxy and access web content that has been blocked by policy.

Weakness classification

  • psirt@cisco.com: CWE-20
  • nvd@nist.gov: CWE-20

Primary references