CVE-2019-19631: Bigswitch Big Cloud Fabric

High severity, CVSS 8.8. EPSS: 1.7% chance of exploitation in the next 30 days.

An issue was discovered in Big Switch Big Monitoring Fabric 6.2 through 6.2.4, 6.3 through 6.3.9, 7.0 through 7.0.3, and 7.1 through 7.1.3; Big Cloud Fabric 4.5 through 4.5.5, 4.7 through 4.7.7, 5.0 through 5.0.1, and 5.1 through 5.1.4; and Multi-Cloud Director through 1.1.0. A read-only user can access sensitive information via an API endpoint that reveals session cookies of authenticated administrators, leading to privilege escalation.

Affected products

• Bigswitch Big Cloud Fabric: from 4.5, before 4.5.5 (fixed in 4.5.5); from 4.7, before 4.7.7 (fixed in 4.7.7); from 5.0, before 5.0.1 (fixed in 5.0.1); from 5.1, before 5.1.4 (fixed in 5.1.4)
• Bigswitch Big Monitoring Fabric: from 6.2, before 6.2.4 (fixed in 6.2.4); from 6.3, before 6.3.9 (fixed in 6.3.9); from 7.0, before 7.0.3 (fixed in 7.0.3); from 7.1, before 7.1.4 (fixed in 7.1.4)
• Bigswitch Multi-Cloud Director: before 1.1.0 (fixed in 1.1.0)

Published 2020-01-24. Last modified 2026-06-17.