CVE-2026-40061
iControl REST and tmsh vulnerability
HIGH 8.5
At a glance
- Source
- NVD
- EPSS
- EPSS 0.24 % · percentile 14 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- f5
- NVD status
- Analyzed
Description
When BIG-IP DNS is provisioned, a vulnerability exists in an undisclosed iControl REST and BIG-IP TMOS Shell (tmsh) command that may allow an authenticated attacker with the Resource Administrator or Administrator role to execute arbitrary system commands with higher privileges. In Appliance mode deployments, a successful exploit can allow the attacker to cross a security boundary. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Weaknesses (CWE)
- CWE-77 — Improper Neutralization of Special Elements used in a Command
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 6.5 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N | f5 |
| CVSS 3.1 | HIGH 8.7 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N | f5 |
| CVSS 4.0 | HIGH 8.5 | CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N | f5 |
| CVSS 4.0 | HIGH 8.5 | CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD · f5sirt@f5.com (Secondary) |
| CVSS 3.1 | HIGH 8.7 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N | NVD · f5sirt@f5.com (Secondary) |
European references
- ENISA EUVD · EUVD-2026-29970
- GCVE · GCVE-0-2026-40061
CERT-FR advisories
- CERTFR-2026-AVI-0591 — Multiples vulnérabilités dans les produits F5 · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*≥ 16.1.0 ≤ 16.1.6cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*≥ 17.1.0 ≤ 17.1.3cpe:2.3:a:f5:big-ip_domain_name_system:*:*:*:*:*:*:*:*≥ 17.5.0 ≤ 17.5.1cpe:2.3:a:f5:big-ip_domain_name_system:21.0.0:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| F5 · BIG-IP | unaffected 21.1.0 < * ; affected 21.0.0 < 21.0.0.1 ; affected 17.5.0 < 17.5.1.4 ; affected 17.1.0 < 17.1.3.1 ; affected 16.1.0 < * |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |