CVE-2019-19631

Name: CVE-2019-19631
Creator: NVD / NIST
Published: 2020-01-24T16:15:11.083+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.73%

Last modified Jun 17, 2026

CVE-2019-19631 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.. EPSS estimates a 1.73% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.73%

74.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Bigswitch	Big Cloud Fabric	>= 4.5, < 4.5.5
Bigswitch	Big Cloud Fabric	>= 4.7, < 4.7.7
Bigswitch	Big Cloud Fabric	>= 5.0, < 5.0.1
Bigswitch	Big Cloud Fabric	>= 5.1, < 5.1.4
Bigswitch	Big Monitoring Fabric	>= 6.2, < 6.2.4
Bigswitch	Big Monitoring Fabric	>= 6.3, < 6.3.9
Bigswitch	Big Monitoring Fabric	>= 7.0, < 7.0.3
Bigswitch	Big Monitoring Fabric	>= 7.1, < 7.1.4
Bigswitch	Multi-Cloud Director	< 1.1.0

References

https://know.bishopfox.com/advisoriesThird Party Advisory
https://know.bishopfox.com/advisories/big-monitoring-fabricExploit, Third Party Advisory
https://know.bishopfox.com/advisoriesThird Party Advisory
https://know.bishopfox.com/advisories/big-monitoring-fabricExploit, Third Party Advisory

Timeline

Published: Jan 24, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-19631?

How severe is CVE-2019-19631?

CVE-2019-19631 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.73% probability of exploitation in the next 30 days.

How do I fix CVE-2019-19631?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-19631?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST