CVE-2022-20784
low-risk
Published 2022-04-06
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.
Do I need to act?
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0.53% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.8/10
Medium
NETWORK
/ LOW complexity
Affected Products (1)
Affected Vendors
References (2)
29
/ 100
low-risk
Severity
22/34 · High
Exploitability
2/34 · Minimal
Exposure
5/34 · Minimal