vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2020-5876

HIGH
8.1
CVSS Score
Published: April 30, 2020 at 08:30 PM UTC
Updated: June 17, 2026 at 03:22 AM UTC
12 products affected across 1 vendorBig IP Access Policy ManagerBig IP Application Security ManagerBig IP Advanced Firewall Manager

Using BIG-IP by N/A?

Get instant alerts when new vulnerabilities affect BIG-IP - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
HIGH8.1
Exploit prediction
EPSS 0.6%

Description

On BIG-IP 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, a race condition exists where mcpd and other processes may make unencrypted connection attempts to a new configuration sync peer. The race condition can occur when changing the ConfigSync IP address of a peer, adding a new peer, or when the Traffic Management Microkernel (TMM) first starts up.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Big IP Access Policy Manager· F5
95%
11.6.1 ≤ v ≤ 11.6.5.112.1.0 ≤ v ≤ 12.1.5.113.1.0 ≤ v ≤ 13.1.3.314.1.0 ≤ v ≤ 14.1.2.315.0.0 ≤ v ≤ 15.1.0.3
Big IP Advanced Firewall Manager· F5
95%
11.6.1 ≤ v ≤ 11.6.5.112.1.0 ≤ v ≤ 12.1.5.113.1.0 ≤ v ≤ 13.1.3.314.1.0 ≤ v ≤ 14.1.2.315.0.0 ≤ v ≤ 15.1.0.3
Big IP Analytics· F5
95%
11.6.1 ≤ v ≤ 11.6.5.112.1.0 ≤ v ≤ 12.1.5.113.1.0 ≤ v ≤ 13.1.3.314.1.0 ≤ v ≤ 14.1.2.315.0.0 ≤ v ≤ 15.1.0.3
Big IP Application Acceleration Manager· F5
95%
11.6.1 ≤ v ≤ 11.6.5.112.1.0 ≤ v ≤ 12.1.5.113.1.0 ≤ v ≤ 13.1.3.314.1.0 ≤ v ≤ 14.1.2.315.0.0 ≤ v ≤ 15.1.0.3
Big IP Application Security Manager· F5
95%
11.6.1 ≤ v ≤ 11.6.5.112.1.0 ≤ v ≤ 12.1.5.113.1.0 ≤ v ≤ 13.1.3.314.1.0 ≤ v ≤ 14.1.2.315.0.0 ≤ v ≤ 15.1.0.3
Big IP Domain Name System· F5
95%
11.6.1 ≤ v ≤ 11.6.5.112.1.0 ≤ v ≤ 12.1.5.113.1.0 ≤ v ≤ 13.1.3.314.1.0 ≤ v ≤ 14.1.2.315.0.0 ≤ v ≤ 15.1.0.3
Big IP Fraud Protection Service· F5
95%
11.6.1 ≤ v ≤ 11.6.5.112.1.0 ≤ v ≤ 12.1.5.113.1.0 ≤ v ≤ 13.1.3.314.1.0 ≤ v ≤ 14.1.2.315.0.0 ≤ v ≤ 15.1.0.3
Big IP Global Traffic Manager· F5
95%
11.6.1 ≤ v ≤ 11.6.5.112.1.0 ≤ v ≤ 12.1.5.113.1.0 ≤ v ≤ 13.1.3.314.1.0 ≤ v ≤ 14.1.2.315.0.0 ≤ v ≤ 15.1.0.3
Big IP Link Controller· F5
95%
11.6.1 ≤ v ≤ 11.6.5.112.1.0 ≤ v ≤ 12.1.5.113.1.0 ≤ v ≤ 13.1.3.314.1.0 ≤ v ≤ 14.1.2.315.0.0 ≤ v ≤ 15.1.0.3
Big IP Local Traffic Manager· F5
95%
11.6.1 ≤ v ≤ 11.6.5.112.1.0 ≤ v ≤ 12.1.5.113.1.0 ≤ v ≤ 13.1.3.314.1.0 ≤ v ≤ 14.1.2.315.0.0 ≤ v ≤ 15.1.0.3

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_MISCVendor Advisory
Source: [email protected]
https://support.f5.com/csp/article/K32121038

CVSS

8.1HIGH[email protected]
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-319CWE-362

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card