NGINX Ingress Controller vulnerability (F5 NGINX Ingress Controller)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.50 % · percentile 43 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- f5
- NVD status
- Analyzed
Description
When NGINX Ingress Controller processes Ingress or TransportServer resources, an authenticated, remote attacker with permission to create or modify Ingress or TransportServer resources can cause the NGINX Ingress Controller process to terminate. Impact: The NGINX Ingress Controller control plane process terminates and enters a persistent crash loop while the malformed Ingress or TransportServer resource remains in the cluster. This vulnerability allows a remote, authenticated attacker with at least Ingress or TransportServer resource write access to cause a denial-of-service (DoS) on the NGINX Ingress Controller system. There is no data plane exposure; this is a control plane issue only. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Weaknesses (CWE)
- CWE-476 — NULL Pointer Dereference
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | f5 |
| CVSS 4.0 | HIGH 7.1 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | f5 |
| CVSS 4.0 | HIGH 7.1 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/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 | MEDIUM 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | NVD · f5sirt@f5.com (Secondary) |
European references
- ENISA EUVD · EUVD-2026-44681
- GCVE · GCVE-0-2026-52865
CERT-FR advisories
- CERTFR-2026-AVI-0894 — Multiples vulnérabilités dans les produits F5 · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:f5:nginx_ingress_controller:*:*:*:*:*:*:*:*≥ 3.5.0 ≤ 3.7.2cpe:2.3:a:f5:nginx_ingress_controller:*:*:*:*:*:*:*:*≥ 4.0.0 ≤ 4.0.1cpe:2.3:a:f5:nginx_ingress_controller:*:*:*:*:*:*:*:*≥ 5.0.0 < 5.5.2
Affected products
| Product | Versions |
|---|---|
| F5 · NGINX Ingress Controller | affected 5.0.0 < 5.5.2 ; affected 2026-lts-r1 < 2026-lts-r3 |
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 |