CVE-2019-6656

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-09-25 · updated 2026-06-17
Weakness: CWE-532

Description

BIG-IP APM Edge Client before version 7.1.8 (7180.2019.508.705) logs the full apm session ID in the log files. Vulnerable versions of the client are bundled with BIG-IP APM versions 15.0.0-15.0.1, 14,1.0-14.1.0.6, 14.0.0-14.0.0.4, 13.0.0-13.1.1.5, 12.1.0-12.1.5, and 11.5.1-11.6.5. In BIG-IP APM 13.1.0 and later, the APM Clients components can be updated independently from BIG-IP software. Client version 7.1.8 (7180.2019.508.705) and later has the fix.

Affected products

F5 BIG-IP APM: from 11.5.2 through 11.6.5; from 12.1.0 through 12.1.5; from 13.1.0 before 13.1.3; from 14.0.0 before 14.0.0.5; from 14.1.0 before 14.1.2; from 15.0.0 through 15.0.1 — fixed in 13.1.3, 14.0.0.5, 14.1.2
F5 Networks, Inc. BIG-IP APM client for Windows: from 7.1.5 through 7.1.8

How to fix

Upgrade to a fixed version: F5 BIG-IP APM 13.1.3, 14.0.0.5, 14.1.2. Check the vendor advisory for mitigations.

References

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