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5.8 Medium

CVE-2021-1534 A vulnerability in the antispam protection mechanisms of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA)…

Description

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.

Affected products and versions

Product Affected versions Fixed in
Cisco Email Security Appliance (ESA) Versions not published

References

Timeline

  1. Published
  2. Last modified

Other CVEs of Cisco Email Security Appliance (ESA)

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CVE-2023-20057 A vulnerability in the URL filtering mechanism of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA)… 0.0 Not rated CVE-2022-20798 A vulnerability in the external authentication functionality of Cisco Secure Email and Web Manager, formerly known as… 9.8 Critical CVE-2022-20664 A vulnerability in the web management interface of Cisco Secure Email and Web Manager, formerly Cisco Security… 7.7 High CVE-2022-20653 A vulnerability in the DNS-based Authentication of Named Entities (DANE) email verification component of Cisco AsyncOS… 7.5 High
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