CVE-2020-5947
MEDIUMBIG-IP 15.1.0-15.1.1 and 16.0.0-16.0.0.1 - TCP Sequence Number Exposure
Title source: llmDescription
In versions 16.0.0-16.0.0.1 and 15.1.0-15.1.1, on specific BIG-IP platforms, attackers may be able to obtain TCP sequence numbers from the BIG-IP system that can be reused in future connections with the same source and destination port and IP numbers. Only these platforms are affected: BIG-IP 2000 series (C112), BIG-IP 4000 series (C113), BIG-IP i2000 series (C117), BIG-IP i4000 series (C115), BIG-IP Virtual Edition (VE).
References (1)
Core 1
Core References
Vendor Advisory x_refsource_confirm
https://support.f5.com/csp/article/K64571774
Scores
CVSS v3
4.3
EPSS
0.0019
EPSS Percentile
39.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Details
Status
published
Products (14)
f5/big-ip_access_policy_manager
15.0.0 - 15.1.2
f5/big-ip_advanced_firewall_manager
15.0.0 - 15.1.2
f5/big-ip_advanced_web_application_firewall
15.0.0 - 15.1.2
f5/big-ip_analytics
15.0.0 - 15.1.2
f5/big-ip_application_acceleration_manager
15.0.0 - 15.1.2
f5/big-ip_application_security_manager
15.0.0 - 15.1.2
f5/big-ip_ddos_hybrid_defender
15.0.0 - 15.1.2
f5/big-ip_domain_name_system
15.0.0 - 15.1.2
f5/big-ip_fraud_protection_service
15.0.0 - 15.1.2
f5/big-ip_global_traffic_manager
15.0.0 - 15.1.2
... and 4 more
Published
Nov 19, 2020
Tracked Since
Feb 18, 2026