CVE-2026-40067 Details
Description
When a BIG-IP APM access policy is configured on a virtual server, undisclosed traffic can cause the apmd process to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
A denial-of-service vulnerability has been identified in F5 BIG-IP APM versions 21.0.0, 17.5.0 through 17.5.1, and 17.1.0 through 17.1.3. When an APM access policy is active on a virtual server, certain undisclosed traffic can lead to the termination of the 'apmd' process. This disruption causes a temporary outage as the process restarts, allowing for an unauthenticated attacker to exploit this issue and cause a DoS condition on the BIG-IP APM system.
Users can upgrade to BIG-IP APM versions 21.0.0.1, 17.5.1.4, or 17.1.3.1 to address this vulnerability. For more information about managing BIG-IP product hotfixes, refer to the F5 article K13123.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 13, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://my.f5.com/manage/s/article/K000161056 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-120 | Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| f5 big-ip access policy manager | >= 16.1.0, <= 16.1.6 >= 17.1.0, <= 17.1.3 >= 17.5.0, <= 17.5.1 21.0.0 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 29, 2026 | Initial Analysis | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 13, 2026 | New CVE Received | [email protected] |