CVE-2019-6647

Severity: medium (CVSS 5.3 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: 2019-09-04 · updated 2026-06-17
Weakness: CWE-401

Description

On BIG-IP 14.1.0-14.1.0.5, 14.0.0-14.0.0.4, 13.0.0-13.1.2, 12.1.0-12.1.4.1, 11.5.2-11.6.4, when processing authentication attempts for control-plane users MCPD leaks a small amount of memory. Under rare conditions attackers with access to the management interface could eventually deplete memory on the system.

Affected products

F5 BIG-IP APM: from 11.5.1 through 11.6.4; from 12.1.0 through 12.1.4; from 13.0.0 through 13.1.1; 14.0.0, 14.1.0
BIG-IP: from 11.5.1 through 11.6.4; from 12.1.0 through 12.1.4; from 13.0.0 through 13.1.1; 14.0.0, 14.1.0
F5 Big-Ip Analytics: from 11.5.1 through 11.6.4; from 12.1.0 through 12.1.4; from 13.0.0 through 13.1.1; 14.0.0, 14.1.0
F5 Networks, Inc. BIG-IP (AAM): from 11.5.1 through 11.6.4; from 12.1.0 through 12.1.4; from 13.0.0 through 13.1.1; 14.0.0, 14.1.0
BIG-IP ASM: from 11.5.1 through 11.6.4; from 12.1.0 through 12.1.4; from 13.0.0 through 13.1.1; 14.0.0, 14.1.0
F5 BIG-IP DNS: from 11.5.1 through 11.6.4; from 12.1.0 through 12.1.4; from 13.0.0 through 13.1.1; 14.0.0, 14.1.0
F5 Big-Ip Edge Gateway: from 11.5.1 through 11.6.4; from 12.1.0 through 12.1.4; from 13.0.0 through 13.1.1; 14.0.0, 14.1.0
F5 Big-Ip Fraud Protection Service: from 11.5.1 through 11.6.4; from 12.1.0 through 12.1.4; from 13.0.0 through 13.1.1; 14.0.0, 14.1.0
F5 Big-Ip Global Traffic Manager: from 11.5.1 through 11.6.4; from 12.1.0 through 12.1.4; from 13.0.0 through 13.1.1; 14.0.0, 14.1.0
F5 Big-Ip Link Controller: from 11.5.1 through 11.6.4; from 12.1.0 through 12.1.4; from 13.0.0 through 13.1.1; 14.0.0, 14.1.0
F5 BIG-IP (LTM): from 11.5.1 through 11.6.4; from 12.1.0 through 12.1.4; from 13.0.0 through 13.1.1; 14.0.0, 14.1.0
F5 Networks, Inc. BIG-IP (PEM): from 11.5.1 through 11.6.4; from 12.1.0 through 12.1.4; from 13.0.0 through 13.1.1; 14.0.0, 14.1.0
F5 Big-Ip Webaccelerator: from 11.5.1 through 11.6.4; from 12.1.0 through 12.1.4; from 13.0.0 through 13.1.1; 14.0.0, 14.1.0

References

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