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Fencer Intel
high 7.5

CVE-2020-5933 json

On versions 15.1.0-15.1.0.5, 14.1.0-14.1.2.3, 13.1.0-13.1.3.4, 12.1.0-12.1.5.1, and 11.6.1-11.6.5.1, when a BIG-IP system that has a virtua…

published 6y ago modified 4mo ago also EUVD-2020-27087

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 64%
public exploits
0
none known

Summary

On versions 15.1.0-15.1.0.5, 14.1.0-14.1.2.3, 13.1.0-13.1.3.4, 12.1.0-12.1.5.1, and 11.6.1-11.6.5.1, when a BIG-IP system that has a virtual server configured with an HTTP compression profile processes compressed HTTP message payloads that require deflation, a Slowloris-style attack can trigger an out-of-memory condition on the BIG-IP system.

Patch / fix

  • f5 big-ip_access_policy_manager 11.6.5.2, 12.1.5.2, 14.1.2.4, 15.1.1
  • f5 big-ip_advanced_firewall_manager 11.6.5.2, 12.1.5.2, 14.1.2.4, 15.1.1
  • f5 big-ip_analytics 11.6.5.2, 12.1.5.2, 14.1.2.4, 15.1.1
  • f5 big-ip_application_acceleration_manager 11.6.5.2, 12.1.5.2, 14.1.2.4, 15.1.1
  • f5 big-ip_application_security_manager 11.6.5.2, 12.1.5.2, 14.1.2.4, 15.1.1
  • f5 big-ip_domain_name_system 11.6.5.2, 12.1.5.2, 14.1.2.4, 15.1.1
  • f5 big-ip_fraud_protection_service 11.6.5.2, 12.1.5.2, 14.1.2.4, 15.1.1
  • f5 big-ip_global_traffic_manager 11.6.5.2, 12.1.5.2, 14.1.2.4, 15.1.1
  • f5 big-ip_link_controller 11.6.5.2, 12.1.5.2, 14.1.2.4, 15.1.1
  • f5 big-ip_local_traffic_manager 11.6.5.2, 12.1.5.2, 14.1.2.4, 15.1.1
  • f5 big-ip_policy_enforcement_manager 11.6.5.2, 12.1.5.2, 14.1.2.4, 15.1.1

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Exploit prediction

1.06% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-09).

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 7.8 AV:N/AC:L/Au:N/C:N/I:N/A:C

Affected products

  • n/a BIG-IP

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.