Cisco patches critical vulnerabilitiesNetwork Security, Security Updates & Patches, Vulnerabilities & Exploits / By Frank Crast / November 8, 2018 September 27, 2019 /Cisco released four critical security advisories on Wednesday for multiple Cisco products. Tags: Apache, Cisco, CVE-2016-1000031, CVE-2018-15381, CVE-2018-15394, CVE-2018-15439, Stealthwatch, Struts