CVE-2026-42937 Details
Description
Incorrect permission assignment vulnerabilities exist in BIG-IP and BIG-IQ TMOS Shell (tmsh) arp and ndp commands, and in BIG-IP iControl REST. These vulnerabilities may allow an authenticated attacker to view adjacent network information. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
A vulnerability exists in F5 BIG-IP and BIG-IQ due to incorrect permission assignments in the TMOS Shell (tmsh) arp and ndp commands, as well as in BIG-IP iControl REST. This vulnerability may enable an authenticated attacker to access adjacent network information. Notably, this issue affects only versions that have not reached End of Technical Support (EoTS).
Users can upgrade to a fixed version. For BIG-IP, versions 21.0.0.2, 17.5.1.6, and 17.1.3.2 are available. For BIG-IQ, no specific version is listed, but users can refer to the F5 BIG-IQ hotfix and point release matrix for guidance. Until a fixed version is installed, access to iControl REST and tmsh can be restricted to trusted networks or devices.
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/K000161018 | [email protected] | MitigationVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-732 | Incorrect Permission Assignment for Critical Resource | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| f5 big-ip access policy manager | >= 16.1.0, <= 16.1.6 >= 17.1.0, <= 17.1.3.1 >= 17.5.0, <= 17.5.1.4 |
CPE
Remediation
| |
| f5 big-ip advanced firewall manager | >= 16.1.0, <= 16.1.6 >= 17.1.0, <= 17.1.3.1 >= 17.5.0, <= 17.5.1.4 |
CPE
Remediation
| |
| f5 big-ip advanced web application firewall | >= 16.1.0, <= 16.1.6 >= 17.1.0, <= 17.1.3.1 >= 17.5.0, <= 17.5.1.4 |
CPE
Remediation
| |
| f5 big-ip analytics | >= 16.1.0, <= 16.1.6 >= 17.1.0, <= 17.1.3.1 >= 17.5.0, <= 17.5.1.4 |
CPE
Remediation
| |
| f5 big-ip application acceleration manager | >= 16.1.0, <= 16.1.6 >= 17.1.0, <= 17.1.3.1 >= 17.5.0, <= 17.5.1.4 |
CPE
Remediation
| |
| f5 big-ip application security manager | >= 16.1.0, <= 16.1.6 >= 17.1.0, <= 17.1.3.1 >= 17.5.0, <= 17.5.1.4 |
CPE
Remediation
| |
| f5 big-ip application visibility and reporting | >= 16.1.0, <= 16.1.6 >= 17.1.0, <= 17.1.3.1 >= 17.5.0, <= 17.5.1.4 |
CPE
Remediation
| |
| f5 big-ip automation toolchain | >= 16.1.0, <= 16.1.6 >= 17.1.0, <= 17.1.3.1 >= 17.5.0, <= 17.5.1.4 |
CPE
Remediation
| |
| f5 big-ip carrier-grade nat | >= 16.1.0, <= 16.1.6 >= 17.1.0, <= 17.1.3.1 >= 17.5.0, <= 17.5.1.4 |
CPE
Remediation
| |
| f5 big-ip container ingress services | >= 16.1.0, <= 16.1.6 >= 17.1.0, <= 17.1.3.1 >= 17.5.0, <= 17.5.1.4 |
CPE
Remediation
| |
| f5 big-ip ddos hybrid defender | >= 16.1.0, <= 16.1.6 >= 17.1.0, <= 17.1.3.1 >= 17.5.0, <= 17.5.1.4 |
CPE
Remediation
| |
| f5 big-ip domain name system | >= 16.1.0, <= 16.1.6 >= 17.1.0, <= 17.1.3.1 >= 17.5.0, <= 17.5.1.4 |
CPE
Remediation
| |
| f5 big-ip edge gateway | >= 16.1.0, <= 16.1.6 >= 17.1.0, <= 17.1.3.1 >= 17.5.0, <= 17.5.1.4 |
CPE
Remediation
| |
| f5 big-ip fraud protection service | >= 16.1.0, <= 16.1.6 >= 17.1.0, <= 17.1.3.1 >= 17.5.0, <= 17.5.1.4 |
CPE
Remediation
| |
| f5 big-ip global traffic manager | >= 16.1.0, <= 16.1.6 >= 17.1.0, <= 17.1.3.1 >= 17.5.0, <= 17.5.1.4 |
CPE
Remediation
| |
| f5 big-ip link controller | >= 16.1.0, <= 16.1.6 >= 17.1.0, <= 17.1.3.1 >= 17.5.0., <= 17.5.1.4 |
CPE
Remediation
| |
| f5 big-ip local traffic manager | >= 16.1.0, <= 16.1.6 >= 17.1.0, <= 17.1.3.1 >= 17.5.0, <= 17.5.1.4 |
CPE
Remediation
| |
| f5 big-ip policy enforcement manager | >= 16.1.0, <= 16.1.6 >= 17.1.0, <= 17.1.3.1 >= 17.5.0, <= 17.5.1.4 |
CPE
Remediation
| |
| f5 big-ip ssl orchestrator | >= 16.1.0, <= 16.1.6 >= 17.1.0, <= 17.1.3.1 >= 17.5.0, <= 17.5.1.4 |
CPE
Remediation
| |
| f5 big-ip webaccelerator | >= 16.1.0, <= 16.1.6 >= 17.1.0, <= 17.1.3.1 >= 17.5.0, <= 17.5.1.4 |
CPE
Remediation
| |
| f5 big-ip websafe | >= 16.1.0, <= 16.1.6 >= 17.1.0, <= 17.1.3.1 >= 17.5.0, <= 17.5.1.4 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 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] |