CVE-2018-5540
On F5 BIG-IP 13.0.0-13.0.1, 12.1.0-12.1.3.3, 11.6.0-11.6.3.1, or 11.5.1-11.5.6, Enterprise Manager 3.1.1, BIG-IQ Centralized Management…
- 4.4MediumCVSS base score
- 0.41%Exploitation in 30 daysEPSS · top 64% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
On F5 BIG-IP 13.0.0-13.0.1, 12.1.0-12.1.3.3, 11.6.0-11.6.3.1, or 11.5.1-11.5.6, Enterprise Manager 3.1.1, BIG-IQ Centralized Management 5.0.0-5.1.0, BIG-IQ Cloud and Orchestration 1.0.0, or F5 iWorkflow 2.1.0-2.3.0 the big3d process does not irrevocably minimize group privileges at start up.
Timeline
ID reserved
By f5
- 6 months later
· 6 months later
Published
- 6 years later
· 6 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Medium4.4 | CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 0.41% · top 64% of all CVEs (10 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.4.
Affected products
F5 Networks, Inc. · BIG-IP (DNS, GTM)
- affected 13.0.0-13.0.1
- affected 12.1.0-12.1.3.3
- affected 11.6.0-11.6.3.1
- affected 11.5.1-11.5.6
F5 Networks, Inc. · Enterprise Manager
- affected 3.1.1
F5 Networks, Inc. · BIG-IQ Centralized Management
- affected 5.0.0-5.1.0
F5 Networks, Inc. · BIG-IQ Cloud and Orchestration
- affected 1.0.0
F5 Networks, Inc. · F5 iWorkflow
- affected 2.1.0-2.3.0
References
4
- 1041340 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- https://support.f5.com/csp/article/K82038789 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 104920 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 1041341 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2018-17309 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2018-5540)Record last updated .