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Fencer Vulns
high 7.4

CVE-2020-5913 json

In versions 15.0.0-15.1.0.1, 14.1.0-14.1.2.3, 13.1.0-13.1.3.4, 12.1.0-12.1.5.1, and 11.6.1-11.6.5.2, the BIG-IP Client or Server SSL profil…

published 2020-08-26 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-27067

cvss
7.4
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 43%
public exploits
0
none known

Summary

In versions 15.0.0-15.1.0.1, 14.1.0-14.1.2.3, 13.1.0-13.1.3.4, 12.1.0-12.1.5.1, and 11.6.1-11.6.5.2, the BIG-IP Client or Server SSL profile ignores revoked certificates, even when a valid CRL is present. This impacts SSL/TLS connections and may result in a man-in-the-middle attack on the connections.

Patch / fix

  • f5 big-ip_access_policy_manager 11.6.5, 12.1.5.2, 13.1.3, 14.1.2-0.89.37, 14.1.2.5, 15.0.1.2
  • f5 big-ip_advanced_firewall_manager 11.6.5, 12.1.5.2, 13.1.3, 14.1.2-0.89.37, 14.1.2.5, 15.0.1.2
  • f5 big-ip_advanced_web_application_firewall 11.6.5, 12.1.5.2, 13.1.3, 14.1.2-0.89.37, 14.1.2.5, 15.0.1.2
  • f5 big-ip_analytics 11.6.5, 12.1.5.2, 13.1.3, 14.1.2-0.89.37, 14.1.2.5, 15.0.1.2
  • f5 big-ip_application_acceleration_manager 11.6.5, 12.1.5.2, 13.1.3, 14.1.2-0.89.37, 14.1.2.5, 15.0.1.2
  • f5 big-ip_application_security_manager 11.6.5, 12.1.5.2, 13.1.3, 14.1.2-0.89.37, 14.1.2.5, 15.0.1.2
  • f5 big-ip_ddos_hybrid_defender 11.6.5, 12.1.5.2, 13.1.3, 14.1.2-0.89.37, 14.1.2.5, 15.0.1.2
  • f5 big-ip_domain_name_system 11.6.5, 12.1.5.2, 13.1.3, 14.1.2-0.89.37, 14.1.2.5, 15.0.1.2
  • f5 big-ip_fraud_protection_service 11.6.5, 12.1.5.2, 13.1.3, 14.1.2-0.89.37, 14.1.2.5, 15.0.1.2
  • f5 big-ip_global_traffic_manager 11.6.5, 12.1.5.2, 13.1.3, 14.1.2-0.89.37, 14.1.2.5, 15.0.1.2
  • f5 big-ip_link_controller 11.6.5, 12.1.5.2, 13.1.3, 14.1.2-0.89.37, 14.1.2.5, 15.0.1.2
  • f5 big-ip_local_traffic_manager 11.6.5, 12.1.5.2, 13.1.3, 14.1.2-0.89.37, 14.1.2.5, 15.0.1.2
  • f5 big-ip_policy_enforcement_manager 11.6.5, 12.1.5.2, 13.1.3, 14.1.2-0.89.37, 14.1.2.5, 15.0.1.2
  • f5 ssl_orchestrator 11.6.5, 12.1.5.2, 13.1.3, 14.1.2-0.89.37, 14.1.2.5, 15.0.1.2

Exploit prediction

0.50% chance of exploitation in the next 30 days, higher than 43% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
NVD 2.0 5.8 AV:N/AC:M/Au:N/C:P/I:P/A:N

Affected products

  • n/a BIG-IP

Classification

Weakness
  • CWE-295 Improper Certificate Validation

References

Sources

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.