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Critical9.1F5

Critical [CVE-2021-23005] BIG-IQ: On all 7.x and 6.x versions (fixed in 8.0.0)

This critical-severity F5 advisory covers CVE-2021-23005 affecting BIG-IQ.

CVE-2021-23005 Published Mar 31, 2021Updated by vendor Jun 17, 2026
Affected products & platforms
F5BIG-IQ
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Summary

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.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions
  • 8.0.0

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation

Upgrade to a fixed release: 8.0.0. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

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