CVE-2020-5871

mediumpriority · track · 30EPSS 0.010 · 64 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.04% (64th) EPSS

CVSS 5 · medium

Is it mine?

12 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-400USLLM-inferred

affected products (12)

Products and version ranges known to be affected.

n/a BIG-IP≤ 14.1.0-14.1.2.3enisa_euvdEU
f5 big-ip access policy manager14.1.0 → 14.1.2.3nvdUScpe:2.3:a:f5:big-ip_access_policy_manager:*:*:*:*:*:*:*:*
f5 big-ip advanced firewall manager14.1.0 → 14.1.2.3nvdUScpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*
f5 big-ip analytics14.1.0 → 14.1.2.3nvdUScpe:2.3:a:f5:big-ip_analytics:*:*:*:*:*:*:*:*
f5 big-ip application acceleration manager14.1.0 → 14.1.2.3nvdUScpe:2.3:a:f5:big-ip_application_acceleration_manager:*:*:*:*:*:*:*:*
f5 big-ip application security manager14.1.0 → 14.1.2.3nvdUScpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*
f5 big-ip domain name system14.1.0 → 14.1.2.3nvdUScpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*
f5 big-ip fraud protection service14.1.0 → 14.1.2.3nvdUScpe:2.3:a:f5:big-ip_fraud_protection_service:*:*:*:*:*:*:*:*
f5 big-ip global traffic manager14.1.0 → 14.1.2.3nvdUScpe:2.3:a:f5:big-ip_global_traffic_manager:*:*:*:*:*:*:*:*
f5 big-ip link controller14.1.0 → 14.1.2.3nvdUScpe:2.3:a:f5:big-ip_link_controller:*:*:*:*:*:*:*:*
f5 big-ip local traffic manager14.1.0 → 14.1.2.3nvdUScpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*
f5 big-ip policy enforcement manager14.1.0 → 14.1.2.3nvdUScpe:2.3:a:f5:big-ip_policy_enforcement_manager:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2020-04-30modified 2026-06-17

references (6)

External citations — patches, advisories, analysis.

scry

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