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CVE-2023-23555

BIG-IP Virtual Edition vulnerability

HIGH
7.5
CVSS Score
Published: February 1, 2023 at 05:57 PM UTC
Updated: June 17, 2026 at 05:37 AM UTC
14 products affected across 1 vendorBig IP Access Policy ManagerBig IP Application Security ManagerBig IP Advanced Firewall Manager

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Severity
HIGH7.5
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

On BIG-IP Virtual Edition versions 15.1x beginning in 15.1.4 to before 15.1.8 and 14.1.x beginning in 14.1.5 to before 14.1.5.3, and BIG-IP SPK beginning in 1.5.0 to before 1.6.0, when FastL4 profile is configured on a virtual server, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected

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

Big IP Access Policy Manager· F5
95%
14.1.5 ≤ v < 14.1.5.315.1.4 ≤ v < 15.1.8
Affected range stops below 14.1.5.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.8, so it looks safe — our inference, not a vendor statement
Big IP Advanced Firewall Manager· F5
95%
14.1.5 ≤ v < 14.1.5.315.1.0 ≤ v < 15.1.8
Affected range stops below 14.1.5.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.8, so it looks safe — our inference, not a vendor statement
Big IP Analytics· F5
95%
14.1.5 ≤ v < 14.1.5.315.1.4 ≤ v < 15.1.8
Affected range stops below 14.1.5.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.8, so it looks safe — our inference, not a vendor statement
Big IP Application Acceleration Manager· F5
95%
14.1.5 ≤ v < 14.1.5.315.1.4 ≤ v < 15.1.8
Affected range stops below 14.1.5.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.8, so it looks safe — our inference, not a vendor statement
Big IP Application Security Manager· F5
95%
14.1.5 ≤ v < 14.1.5.315.1.4 ≤ v < 15.1.8
Affected range stops below 14.1.5.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.8, so it looks safe — our inference, not a vendor statement
Big IP Ddos Hybrid Defender· F5
95%
14.1.5 ≤ v < 14.1.5.315.1.4 ≤ v < 15.1.8
Affected range stops below 14.1.5.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.8, so it looks safe — our inference, not a vendor statement
Big IP Domain Name System· F5
95%
14.1.5 ≤ v < 14.1.5.315.1.4 ≤ v < 15.1.8
Affected range stops below 14.1.5.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.8, so it looks safe — our inference, not a vendor statement
Big IP Fraud Protection Service· F5
95%
14.1.5 ≤ v < 14.1.5.315.1.4 ≤ v < 15.1.8
Affected range stops below 14.1.5.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.8, so it looks safe — our inference, not a vendor statement
Big IP Link Controller· F5
95%
14.1.5 ≤ v < 14.1.5.315.1.4 ≤ v < 15.1.8
Affected range stops below 14.1.5.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.8, so it looks safe — our inference, not a vendor statement
Big IP Local Traffic Manager· F5
95%
14.1.5 ≤ v < 14.1.5.315.1.4 ≤ v < 15.1.8
Affected range stops below 14.1.5.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.1.8, 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)

Vendor Advisory
Source: [email protected]
https://my.f5.com/manage/s/article/K24572686

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHf5
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-665

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