Not a U.S. government website. NDD is an independent vulnerability database by Volerion and is not affiliated with or endorsed by NIST or NVD.
CVE-2026-42058 Details
Description
An authenticated attacker's undisclosed requests to BIG-IP iControl REST can lead to an information leak of BIG-IP local user account names. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
A vulnerability exists in F5 BIG-IP systems that allows an authenticated attacker to leak information about local user account names. This issue arises from undisclosed requests made by the attacker to the iControl REST interface, accessible through the BIG-IP management interface and self IP addresses. The vulnerability affects several versions of BIG-IP, specifically in the 21.x, 17.x, and 16.x branches, as well as BIG-IQ Centralized Management.
Users can upgrade to BIG-IP versions 21.0.0.2, 17.5.1.6, or 17.1.3.2 to address this vulnerability. For those on BIG-IP 16.x, no fix is available, and it is recommended to upgrade to a version with the fix. Until a fixed version is installed, access to the iControl REST interface can be restricted through self IP addresses or the management interface, limiting exposure 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 14, 2026Exploitation: NoneAutomatable: NoTechnical Impact: Total
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://my.f5.com/manage/s/article/K000160903 | [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 | >= 17.1.0, <= 17.1.3 >= 17.5.0, <= 17.5.1 >= 16.1.0, <= 16.1.6 21.0.0 |
CPE
Remediation
| |
| f5 big-ip advanced firewall manager | >= 17.1.0, <= 17.1.3 >= 17.5.0, <= 17.5.1 >= 16.1.0, <= 16.1.6 21.0.0 |
CPE
Remediation
| |
| f5 big-ip advanced web application firewall | >= 17.1.0, <= 17.1.3 >= 17.5.0, <= 17.5.1 >= 16.1.0, <= 16.1.6 21.0.0 |
CPE
Remediation
| |
| f5 big-ip analytics | >= 17.1.0, <= 17.1.3 >= 17.5.0, <= 17.5.1 >= 16.1.0, <= 16.1.6 21.0.0 |
CPE
Remediation
| |
| f5 big-ip application acceleration manager | >= 17.1.0, <= 17.1.3 >= 17.5.0, <= 17.5.1 >= 16.1.0, <= 16.1.6 21.0.0 |
CPE
Remediation
| |
| f5 big-ip application security manager | >= 17.1.0, <= 17.1.3 >= 17.5.0, <= 17.5.1 >= 16.1.0, <= 16.1.6 21.0.0 |
CPE
Remediation
| |
| f5 big-ip application visibility and reporting | >= 17.1.0, <= 17.1.3 >= 17.5.0, <= 17.5.1 >= 16.1.0, <= 16.1.6 21.0.0 |
CPE
Remediation
| |
| f5 big-ip automation toolchain | >= 17.1.0, <= 17.1.3 >= 17.5.0, <= 17.5.1 >= 16.1.0, <= 16.1.6 21.0.0 |
CPE
Remediation
| |
| f5 big-ip carrier-grade nat | >= 17.1.0, <= 17.1.3 >= 17.5.0, <= 17.5.1 >= 16.1.0, <= 16.1.6 21.0.0 |
CPE
Remediation
| |
| f5 big-ip container ingress services | >= 17.1.0, <= 17.1.3 >= 17.5.0, <= 17.5.1 >= 16.1.0, <= 16.1.6 21.0.0 |
CPE
Remediation
| |
| f5 big-ip ddos hybrid defender | >= 17.1.0, <= 17.1.3 >= 17.5.0, <= 17.5.1 >= 16.1.0, <= 16.1.6 21.0.0 |
CPE
Remediation
| |
| f5 big-ip domain name system | >= 17.1.0, <= 17.1.3 >= 17.5.0, <= 17.5.1 >= 16.1.0, <= 16.1.6 21.0.0 |
CPE
Remediation
| |
| f5 big-ip edge gateway | >= 17.1.0, <= 17.1.3 >= 17.5.0, <= 17.5.1 >= 16.1.0, <= 16.1.6 21.0.0 |
CPE
Remediation
| |
| f5 big-ip fraud protection service | >= 17.1.0, <= 17.1.3 >= 17.5.0, <= 17.5.1 >= 16.1.0, <= 16.1.6 21.0.0 |
CPE
Remediation
| |
| f5 big-ip global traffic manager | >= 17.1.0, <= 17.1.3 >= 17.5.0, <= 17.5.1 >= 16.1.0, <= 16.1.6 21.0.0 |
CPE
Remediation
| |
| f5 big-ip link controller | >= 17.1.0, <= 17.1.3 >= 17.5.0, <= 17.5.1 >= 16.1.0, <= 16.1.6 21.0.0 |
CPE
Remediation
| |
| f5 big-ip local traffic manager | >= 17.1.0, <= 17.1.3 >= 17.5.0, <= 17.5.1 >= 16.1.0, <= 16.1.6 21.0.0 |
CPE
Remediation
| |
| f5 big-ip policy enforcement manager | >= 17.1.0, <= 17.1.3 >= 17.5.0, <= 17.5.1 >= 16.1.0, <= 16.1.6 21.0.0 |
CPE
Remediation
| |
| f5 big-ip ssl orchestrator | >= 17.1.0, <= 17.1.3 >= 17.5.0, <= 17.5.1 >= 16.1.0, <= 16.1.6 21.0.0 |
CPE
Remediation
| |
| f5 big-ip webaccelerator | >= 17.1.0, <= 17.1.3 >= 17.5.0, <= 17.5.1 >= 16.1.0, <= 16.1.6 21.0.0 |
CPE
Remediation
| |
| f5 big-ip websafe | >= 17.1.0, <= 17.1.3 >= 17.5.0, <= 17.5.1 >= 16.1.0, <= 16.1.6 21.0.0 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 23, 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] |