CVE-2015-6357: Cisco Firesight System Software

Medium severity, CVSS 6.8. EPSS: 2.6% chance of exploitation in the next 30 days.

The rule-update feature in Cisco FireSIGHT Management Center (MC) 5.2 through 5.4.0.1 does not verify the X.509 certificate of the support.sourcefire.com SSL server, which allows man-in-the-middle attackers to spoof this server and provide an invalid package, and consequently execute arbitrary code, via a crafted certificate, aka Bug ID CSCuw06444.

Affected products

• Cisco Firesight System Software: version 5.2.0 only; version 5.3.0 only; version 5.3.1.1 only; version 5.3.1.2 only; version 5.3.1.5 only; version 5.4.0 only; …

Published 2015-11-18. Last modified 2026-06-17.