On BIG-IP 14.1.0-14.1.0.5, 14.0.0-14.0.0.4, 13.0.0-13.1.1.4, and 12.1.0-12.1.4, under certain circumstances, attackers can decrypt configur…

published 2019-07-03 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-16191

cvss: 5.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 31%
public exploits: 0; none known

On BIG-IP 14.1.0-14.1.0.5, 14.0.0-14.0.0.4, 13.0.0-13.1.1.4, and 12.1.0-12.1.4, under certain circumstances, attackers can decrypt configuration items that are encrypted because the vCMP configuration unit key is generated with insufficient randomness. The attack prerequisite is direct access to encrypted configuration and/or UCS files.

Patch / fix

fixed in 13

f5 big-ip_local_traffic_manager 12.1.4.1, 13.1.1.5, 14.0.0.5, 14.1.0.6
f5 big-ip_application_acceleration_manager 12.1.4.1, 13.1.1.5, 14.0.0.5, 14.1.0.6
f5 big-ip_advanced_firewall_manager 12.1.4.1, 13.1.1.5, 14.0.0.5, 14.1.0.6
f5 big-ip_analytics 12.1.4.1, 13.1.1.5, 14.0.0.5, 14.1.0.6
f5 big-ip_access_policy_manager 12.1.4.1, 13.1.1.5, 14.0.0.5, 14.1.0.6
f5 big-ip_application_security_manager 12.1.4.1, 13.1.1.5, 14.0.0.5, 14.1.0.6
f5 big-ip_domain_name_system 12.1.4.1, 13.1.1.5, 14.0.0.5, 14.1.0.6
f5 big-ip_edge_gateway 12.1.4.1, 13.1.1.5, 14.0.0.5, 14.1.0.6
f5 big-ip_global_traffic_manager 12.1.4.1, 13.1.1.5, 14.0.0.5, 14.1.0.6
f5 big-ip_link_controller 12.1.4.1, 13.1.1.5, 14.0.0.5, 14.1.0.6
f5 big-ip_policy_enforcement_manager 12.1.4.1, 13.1.1.5, 14.0.0.5, 14.1.0.6
f5 big-ip_webaccelerator 12.1.4.1, 13.1.1.5, 14.0.0.5, 14.1.0.6
f5 big-ip_fraud_protection_service 12.1.4.1, 13.1.1.5, 14.0.0.5, 14.1.0.6

Exploit prediction

0.37% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.0	5.5	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD	2.0	2.1	AV:L/AC:L/Au:N/C:P/I:N/A:N

Affected products

F5 BIG-IP

Classification

Weakness

CWE-330 Use of Insufficiently Random Values

References

support.f5.com /csp/article/K01413496
vendor-advisory
securityfocus.com /bid/109112
vdb-entry, third-party-advisory

Sources

CVE List CVE-2019-6632
NVD CVE-2019-6632

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary