Cisco · Cisco Email Security Appliance · CVE-2019-1955
**Name of the Vulnerable Software and Affected Versions**
Cisco Email Security Appliance (ESA) (affected versions not specified)
**Description**
The issue is related to the Sender Policy Framework (SPF) component of the Cisco Email Security Appliance (ESA), which has a vulnerability due to insufficient input validation. This could allow a remote attacker to bypass configured content filters, potentially compromising the integrity of protected information. An attacker can exploit this by sending a customized SPF packet to an affected device, allowing malicious content to pass through the device.
**Recommendations**
At the moment, there is no information about a newer version that contains a fix for this vulnerability.