CVE-2021-1534 — Cisco Email Security Appliance URL Filtering Bypass Vulnerability
A vulnerability in the antispam protection mechanisms of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypas…
Published: 2021-10-06 · CVSS: 5.8 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7