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CVE-2021-23005

CRITICAL
9.1
CVSS Score
Published: March 31, 2021 at 05:41 PM UTC
Updated: June 17, 2026 at 03:38 AM UTC
1 product affected across 1 vendorBIG-IQ Centralized Management

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Severity
CRITICAL9.1
Exploit prediction
EPSS 1%

Description

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

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

BIG-IQ Centralized Management· F5
95%
6.0.0 ≤ v < 8.0.0All 7.x and 6.x versions
Affected range stops below 8.0.0, so it looks safe — our inference, not a vendor statement

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/K01243064

CVSS

9.1CRITICAL[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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