CVE-2019-6638 json
On BIG-IP 14.1.0-14.1.0.5 and 14.0.0-14.0.0.4, Malformed http requests made to an undisclosed iControl REST endpoint can lead to infinite l…
published 2019-07-03 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-16197
- cvss
- 6.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.0%
- EPSS 2.0% chance of exploitation in 30 days, percentile 80%
- public exploits
- 0
- none known
Summary
On BIG-IP 14.1.0-14.1.0.5 and 14.0.0-14.0.0.4, Malformed http requests made to an undisclosed iControl REST endpoint can lead to infinite loop of the restjavad process.
Patch / fix
- f5 big-ip_local_traffic_manager 14.0.0.5, 14.1.0.6
- f5 big-ip_application_acceleration_manager 14.0.0.5, 14.1.0.6
- f5 big-ip_advanced_firewall_manager 14.0.0.5, 14.1.0.6
- f5 big-ip_analytics 14.0.0.5, 14.1.0.6
- f5 big-ip_access_policy_manager 14.0.0.5, 14.1.0.6
- f5 big-ip_application_security_manager 14.0.0.5, 14.1.0.6
- f5 big-ip_domain_name_system 14.0.0.5, 14.1.0.6
- f5 big-ip_edge_gateway 14.0.0.5, 14.1.0.6
- f5 big-ip_global_traffic_manager 14.0.0.5, 14.1.0.6
- f5 big-ip_link_controller 14.0.0.5, 14.1.0.6
- f5 big-ip_policy_enforcement_manager 14.0.0.5, 14.1.0.6
- f5 big-ip_webaccelerator 14.0.0.5, 14.1.0.6
- f5 big-ip_fraud_protection_service 14.0.0.5, 14.1.0.6
Exploit prediction
1.95% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:N/I:N/A:P |
Affected products
- F5 BIG-IP
Classification
- Weakness
-
- CWE-835 Loop with Unreachable Exit Condition
References
-
support.f5.com
/csp/article/K67825238
vendor-advisory
-
securityfocus.com
/bid/109106
vdb-entry, third-party-advisory
- support.f5.com /csp/article/K67825238?utm_source=f5support&%3Butm_medium=RSS
Sources
- CVE List CVE-2019-6638
- NVD CVE-2019-6638
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