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Fencer Intel
medium 5.9

CVE-2020-5917 json

In BIG-IP versions 15.1.0-15.1.0.4, 15.0.0-15.0.1.3, 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 and BIG-IQ vers…

published 6y ago modified 4mo ago also EUVD-2020-27071

cvss
5.9
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 44%
public exploits
0
none known

Summary

In BIG-IP versions 15.1.0-15.1.0.4, 15.0.0-15.0.1.3, 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 and BIG-IQ versions 5.2.0-7.0.0, the host OpenSSH servers utilize keys of less than 2048 bits which are no longer considered secure.

Patch / fix

  • f5 big-ip_access_policy_manager 12.1.5.2, 14.1.2.4, 15.0.1.4, 15.1.0.5
  • f5 big-ip_advanced_firewall_manager 12.1.5.2, 14.1.2.4, 15.0.1.4, 15.1.0.5
  • f5 big-ip_analytics 12.1.5.2, 14.1.2.4, 15.0.1.4, 15.1.0.5
  • f5 big-ip_application_acceleration_manager 12.1.5.2, 14.1.2.4, 15.0.1.4, 15.1.0.5
  • f5 big-ip_application_security_manager 12.1.5.2, 14.1.2.4, 15.0.1.4, 15.1.0.5
  • f5 big-ip_domain_name_system 12.1.5.2, 14.1.2.4, 15.0.1.4, 15.1.0.5
  • f5 big-ip_fraud_protection_service 12.1.5.2, 14.1.2.4, 15.0.1.4, 15.1.0.5
  • f5 big-ip_global_traffic_manager 12.1.5.2, 14.1.2.4, 15.0.1.4, 15.1.0.5
  • f5 big-ip_link_controller 12.1.5.2, 14.1.2.4, 15.0.1.4, 15.1.0.5
  • f5 big-ip_local_traffic_manager 12.1.5.2, 14.1.2.4, 15.0.1.4, 15.1.0.5
  • f5 big-ip_policy_enforcement_manager 12.1.5.2, 14.1.2.4, 15.0.1.4, 15.1.0.5

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Exploit prediction

0.52% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N

Affected products

  • n/a BIG-IP, BIG-IQ

Classification

Weakness
  • CWE-326 Inadequate Encryption Strength

References

Sources

Fencer Intel 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.