CVE-2016-6420: Cisco Firesight System Software

Medium severity, CVSS 6.5. EPSS: 1.8% chance of exploitation in the next 30 days.

Cisco FireSIGHT System Software 4.10.3 through 5.4.0 in Firepower Management Center allows remote authenticated users to bypass authorization checks and gain privileges via a crafted HTTP request, aka Bug ID CSCur25467.

Affected products

• Cisco Firesight System Software: version 4.10.3 only; version 5.2.0 only; version 5.3.0 only; version 5.3.1 only; version 5.4.0 only

Published 2016-10-05. Last modified 2026-06-17.