CVE-2021-23005

9.1 criticalEPSS 1.0%

On all 7.x and 6.x versions (fixed in 8.0.0), when using a Quorum device for BIG-IQ high availability (HA) for automatic failover, BIG-IQ does not make use of Transport Layer Security (TLS) with the Corosync protocol. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

Severity

CVSS 3.1

9.1 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS: 1.0% chance of exploitation in the next 30 days; higher than 63% of CVEs (scores of 2026-10-31)
Published: 2021-03-31
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

f5:big-iq_centralized_management

References

https://support.f5.com/csp/article/K01243064
https://support.f5.com/csp/article/K01243064

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