Cisco IronPort Web Security Appliance up to and including 7.5 does not validate the basic constraints of the certificate authority which could lead to MITM attacks
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/Cisco-SA-20120412-CVE-2012-1326
http://www.securityfocus.com/bid/52981
Source: Mitre, NVD
Published: 2020-01-15
Updated: 2020-01-23
Base Score: 5.8
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N
Severity: Medium
Base Score: 7.4
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Severity: High
EPSS: 0.00136