Missing authorization in F5 BIG-IP APM client for Windows
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-862.
Summary
Windows Logon Integration feature of F5 BIG-IP APM client prior to version 7.1.7.1 for Windows by default uses Legacy logon mode which uses a SYSTEM account to establish network access. This feature displays a certificate user interface dialog box which contains the link to the certificate policy. By clicking on the link, unprivileged users can open additional dialog boxes and get access to the local machine windows explorer which can be used to get administrator privilege. Windows Logon Integration is vulnerable when the APM client is installed by an administrator on a user machine. Users accessing the local machine can get administrator privileges
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| F5 | BIG-IP APM client for Windows | Prior to version 7.1.7.1 | — | No fix listed | CNA |
- BIG-IP APM client for Windows VendorF5 Affected Prior to version 7.1.7.1 Fixed in — No fix listed CNA
CPE configurations NVD · 3
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-5547
- 2026-10-03 Alias added: GHSA-m3rp-fqh4-whc7
References
More F5 Big-ip Access Policy Manager Client vulnerabilities
- TI-2020-04815 Use after free in F5 Edge Client CVSS 3.1HIGH 8.8
- TI-2023-23104 BIG-IP APM Clients TunnelCrack vulnerability CVSS 3.1HIGH 8.2
- TI-2019-04706 Sensitive information in log files in BIG-IP APM Edge Client CVSS 3.1HIGH 7.5
- TI-2024-19079 BIG-IP APM browser network access VPN client vulnerability CVSS 3.1HIGH 7.4
- TI-2022-11356 Uncontrolled search path in F5 BIG-IP APM CVSS 3.1HIGH 7.8
- TI-2020-04814 Incorrect default permissions in F5 Edge Client CVSS 3.1HIGH 7.8
Sources
- CVE-2018-5547 · CVE Program
- CVE-2018-5547 · NVD
- FIRST EPSS
- GHSA-m3rp-fqh4-whc7 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences