CVE-2017-6143

5.4 mediumEPSS 0.4%

Medium (5.4) in f5. EPSS 0.4% chance of exploitation in the next 30 days.

X509 certificate verification was not correctly implemented in the IP Intelligence Subscription and IP Intelligence feed-list features, and thus the remote server's identity is not properly validated in F5 BIG-IP 12.0.0-12.1.2, 11.6.0-11.6.2, or 11.5.0-11.5.5.

Severity

CVSS 3.0

5.4 medium

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 36% of CVEs (scores of 2026-10-31)
CWE: CWE-295
Published: 2018-04-13
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

f5:big-ip_advanced_firewall_manager
f5:big-ip_application_security_manager

References

https://support.f5.com/csp/article/K11464209
https://support.f5.com/csp/article/K11464209

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