CVE-2016-1480: Cisco Email Security Appliance

High severity, CVSS 7.5. EPSS: 2.4% chance of exploitation in the next 30 days.

A vulnerability in the Multipurpose Internet Mail Extensions (MIME) scanner of Cisco AsyncOS Software for Cisco Email Security Appliances (ESA) and Web Security Appliances (WSA) could allow an unauthenticated, remote attacker to bypass configured user filters on the device. Affected Products: all releases prior to the first fixed release of Cisco AsyncOS Software for Cisco ESA and Cisco WSA, both virtual and hardware appliances, if the software is configured with message or content filters to scan incoming email attachments. More Information: CSCuw03606, CSCux59734. Known Affected Releases: 8.0.0-000 8.5.6-106 9.0.0-000 9.1.0-032 9.6.0-042 9.5.0-444 WSA10.0.0-000. Known Fixed Releases: 9.1.1-038 9.7.1-066.

Affected products

• Cisco Email Security Appliance: version 8.0.1-023 only; version 8.0_base only; version 8.5.0-000 only; version 8.5.0-er1-198 only; version 8.5.6-052 only; version 8.5.6-073 only; …

Published 2016-10-28. Last modified 2026-06-17.