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MEDIUM · 5.3

CVE-2026-40435

When configured, IP-based access restrictions for httpd do not cover all endpoints, which may allow connections from blocked addresses.  Note: Software versions which have reached End of Technical Sup...

Vulnerability Description

When configured, IP-based access restrictions for httpd do not cover all endpoints, which may allow connections from blocked addresses.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVSS Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE

Affected Products

VendorProductVersions
F5Big-Ip Access Policy Manager>= 17.1.0, <= 17.1.3
F5Big-Ip Advanced Firewall Manager>= 17.1.0, <= 17.1.3
F5Big-Ip Advanced Web Application Firewall>= 17.1.0, <= 17.1.3
F5Big-Ip Analytics>= 17.1.0, <= 17.1.3
F5Big-Ip Application Acceleration Manager>= 17.1.0, <= 17.1.3
F5Big-Ip Application Security Manager>= 17.1.0, <= 17.1.3
F5Big-Ip Application Visibility And Reporting>= 17.1.0, <= 17.1.3
F5Big-Ip Automation Toolchain>= 17.1.0, <= 17.1.3
F5Big-Ip Carrier-Grade Nat>= 17.1.0, <= 17.1.3
F5Big-Ip Container Ingress Services>= 17.1.0, <= 17.1.3
F5Big-Ip Ddos Hybrid Defender>= 17.1.0, <= 17.1.3
F5Big-Ip Domain Name System>= 17.1.0, <= 17.1.3
F5Big-Ip Edge Gateway>= 17.1.0, <= 17.1.3
F5Big-Ip Fraud Protection Service>= 17.1.0, <= 17.1.3
F5Big-Ip Global Traffic Manager>= 17.1.0, <= 17.1.3
F5Big-Ip Link Controller>= 17.1.0, <= 17.1.3
F5Big-Ip Local Traffic Manager>= 17.1.0, <= 17.1.3
F5Big-Ip Policy Enforcement Manager>= 17.1.0, <= 17.1.3
F5Big-Ip Ssl Orchestrator>= 17.1.0, <= 17.1.3
F5Big-Ip Webaccelerator>= 17.1.0, <= 17.1.3

Related Weaknesses (CWE)

CWE-420

References

FAQ

What is CVE-2026-40435?

CVE-2026-40435 is a vulnerability with a CVSS score of 5.3 (MEDIUM). When configured, IP-based access restrictions for httpd do not cover all endpoints, which may allow connections from blocked addresses.  Note: Software versions which have reached End of Technical Sup...

How severe is CVE-2026-40435?

CVE-2026-40435 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-40435?

Check the references section above for vendor advisories and patch information. Affected products include: F5 Big-Ip Access Policy Manager, F5 Big-Ip Advanced Firewall Manager, F5 Big-Ip Advanced Web Application Firewall, F5 Big-Ip Analytics, F5 Big-Ip Application Acceleration Manager.