Input validation error in Cisco AsyncOS for Cisco Email Security Appliance - CVE-2021-1534

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Main Vulnerability Database Vulnerabilities #VU57118

Input validation error in Cisco AsyncOS for Cisco Email Security Appliance - CVE-2021-1534

Published: October 7, 2021


Vulnerability identifier: #VU57118
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-1534
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to bypass the URL reputation filters on the target device.

The vulnerability exists due to insufficient validation of user-supplied input in the antispam protection mechanisms. A remote attacker can bypass the URL reputation filters that are configured for an affected device.


Affected software

Cisco AsyncOS for Cisco Email Security Appliance

How to mitigate CVE-2021-1534

Install updates from vendor's website.

Cisco AsyncOS for Cisco Email Security Appliance - update to 14.0.1

External References

Related Security Bulletins