How severe is CVE-2020-5870?

CVE-2020-5870 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2020-5870 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-5870?

CVE-2020-5870 affects F5 Big-iq Centralized Management. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-5870?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-5870 published?

CVE-2020-5870 was published on 2020-04-24 and last updated on 2026-06-17.

CVE-2020-5870

CVE-2020-5870 is a high-severity vulnerability in F5 Big-iq Centralized Management with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-306.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 4.8
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: F5 Big-iq Centralized Management
Published: 2020-04-24
Last modified: 2026-06-17

Description

In BIG-IQ 5.2.0-7.0.0, high availability (HA) synchronization mechanisms do not use any form of authentication for connecting to the peer.

Frequently asked questions

What is CVE-2020-5870?: In BIG-IQ 5.2.0-7.0.0, high availability (HA) synchronization mechanisms do not use any form of authentication for connecting to the peer.
How severe is CVE-2020-5870?: CVE-2020-5870 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2020-5870 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-5870?: CVE-2020-5870 affects F5 Big-iq Centralized Management. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-5870?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-5870 published?: CVE-2020-5870 was published on 2020-04-24 and last updated on 2026-06-17.

References

https://support.f5.com/csp/article/K69422435

Affected products (1)

cpe:2.3:a:f5:big-iq_centralized_management:*:*:*:*:*:*:*:*

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