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Fencer Vulns
high 7.5

CVE-2020-5918 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, 13.1.0-13.1.3.3, 12.1.0-12.1.5.1, and 11.6.1-11.6.5.1, the Traffic Ma…

published 2020-08-26 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-27072

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 64%
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, 13.1.0-13.1.3.3, 12.1.0-12.1.5.1, and 11.6.1-11.6.5.1, the Traffic Management Microkernel (TMM) may stop responding when processing Stream Control Transmission Protocol (SCTP) traffic when traffic volume is high. This vulnerability affects TMM by way of a virtual server configured with an SCTP profile.

Patch / fix

  • f5 big-ip_access_policy_manager 11.6.5.2, 12.1.5.2, 13.1.3.4, 14.1.2.5, 15.0.1.4, 15.1.0.5
  • f5 big-ip_advanced_firewall_manager 11.6.5.2, 12.1.5.2, 13.1.3.4, 14.1.2.5, 15.0.1.4, 15.1.0.5
  • f5 big-ip_analytics 11.6.5.2, 12.1.5.2, 13.1.3.4, 14.1.2.5, 15.0.1.4, 15.1.0.5
  • f5 big-ip_application_acceleration_manager 11.6.5.2, 12.1.5.2, 13.1.3.4, 14.1.2.5, 15.0.1.4, 15.1.0.5
  • f5 big-ip_application_security_manager 11.6.5.2, 12.1.5.2, 13.1.3.4, 14.1.2.5, 15.0.1.4, 15.1.0.5
  • f5 big-ip_domain_name_system 11.6.5.2, 12.1.5.2, 13.1.3.4, 14.1.2.5, 15.0.1.4, 15.1.0.5
  • f5 big-ip_fraud_protection_service 11.6.5.2, 12.1.5.2, 13.1.3.4, 14.1.2.5, 15.0.1.4, 15.1.0.5
  • f5 big-ip_global_traffic_manager 11.6.5.2, 12.1.5.2, 13.1.3.4, 14.1.2.5, 15.0.1.4, 15.1.0.5
  • f5 big-ip_link_controller 11.6.5.2, 12.1.5.2, 13.1.3.4, 14.1.2.5, 15.0.1.4, 15.1.0.5
  • f5 big-ip_local_traffic_manager 11.6.5.2, 12.1.5.2, 13.1.3.4, 14.1.2.5, 15.0.1.4, 15.1.0.5
  • f5 big-ip_policy_enforcement_manager 11.6.5.2, 12.1.5.2, 13.1.3.4, 14.1.2.5, 15.0.1.4, 15.1.0.5

Exploit prediction

1.04% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

  • n/a BIG-IP

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.