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CVE-2019-19631

27
FAUCET Score

CVE-2019-19631 describes a sensitive information disclosure vulnerability in Big Switch Big Monitoring Fabric, Big Cloud Fabric, and Multi-Cloud Director. A low-privileged, read-only user can exploit an API endpoint to access session cookies of authenticated administrators, enabling privilege escalation. This vulnerability carries a CVSS score of 8.8 (High) due to its network attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. There is no evidence of active exploitation, nor are public exploit codes like Metasploit or ExploitDB modules available. However, the vulnerability has garnered some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.5, < 4.5.5CPE matchmatch criteria
cpe:2.3:a:bigswitch:big_cloud_fabric:*:*:*:*:*:*:*:*
>= 4.7, < 4.7.7CPE matchmatch criteria
cpe:2.3:a:bigswitch:big_cloud_fabric:*:*:*:*:*:*:*:*
>= 5.0, < 5.0.1CPE matchmatch criteria
cpe:2.3:a:bigswitch:big_cloud_fabric:*:*:*:*:*:*:*:*
>= 5.1, < 5.1.4CPE matchmatch criteria
cpe:2.3:a:bigswitch:big_cloud_fabric:*:*:*:*:*:*:*:*
>= 6.2, < 6.2.4CPE matchmatch criteria
cpe:2.3:a:bigswitch:big_monitoring_fabric:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.73%
Probability of exploitation in next 30 days
EPSS Percentile
75.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0173 is in the 73rd percentile among its peer group of 17,808 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

know.bishopfox.com / advisories
Third Party Advisory
know.bishopfox.com / advisories/big-monitoring-fabric
ExploitThird Party Advisory