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CVE-2020-5871

HIGH
7.5
CVSS Score
Published: April 30, 2020 at 07:49 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

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Severity
HIGH7.5
Exploit prediction
EPSS 1%

Description

On BIG-IP 14.1.0-14.1.2.3, undisclosed requests can lead to a denial of service (DoS) when sent to BIG-IP HTTP/2 virtual servers. The problem can occur when ciphers, which have been blacklisted by the HTTP/2 RFC, are used on backend servers. This is a data-plane issue. There is no control-plane exposure.

Affected

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

Big IP Access Policy Manager· F5
95%
14.1.0 ≤ v ≤ 14.1.2.3
Big IP Advanced Firewall Manager· F5
95%
14.1.0 ≤ v ≤ 14.1.2.3
Big IP Analytics· F5
95%
14.1.0 ≤ v ≤ 14.1.2.3
Big IP Application Acceleration Manager· F5
95%
14.1.0 ≤ v ≤ 14.1.2.3
Big IP Application Security Manager· F5
95%
14.1.0 ≤ v ≤ 14.1.2.3
Big IP Domain Name System· F5
95%
14.1.0 ≤ v ≤ 14.1.2.3
Big IP Fraud Protection Service· F5
95%
14.1.0 ≤ v ≤ 14.1.2.3
Big IP Global Traffic Manager· F5
95%
14.1.0 ≤ v ≤ 14.1.2.3
Big IP Link Controller· F5
95%
14.1.0 ≤ v ≤ 14.1.2.3
Big IP Local Traffic Manager· F5
95%
14.1.0 ≤ v ≤ 14.1.2.3

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/K43450419

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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