Moby's Firewalld reload makes published container ports accessible from remote hosts
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Partial Red Hat: 7 without a fix
Attack profile from CVSS 4.0 · CNA. Fix status from CNA, GitHub and Red Hat.
Summary
Moby is an open source container framework developed by Docker Inc. that is distributed as Docker Engine, Mirantis Container Runtime, and various other downstream projects/products. In versions 28.2.0 through 28.3.2, when the firewalld service is reloaded it removes all iptables rules including those created by Docker. While Docker should automatically recreate these rules, versions before 28.3.3 fail to recreate the specific rules that block external access to containers. This means that after a firewalld reload, containers with ports published to localhost (like 127.0.0.1:8080) become accessible from remote machines that have network routing to the Docker bridge, even though they should only be accessible from the host itself. The vulnerability only affects explicitly published ports - unpublished ports remain protected. This issue is fixed in version 28.3.3.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| moby | moby | 28.2.0 to before 28.3.3 | 28.3.3 | Patch available | CNA |
| — | github.com/docker/docker (Go) | 28.2.0 to before 28.3.3 | 28.3.3 | Patch available | GHSA-x4rx-4gw3-53p4 |
- moby Vendormoby Affected 28.2.0 to before 28.3.3 Fixed in 28.3.3 Patch available CNA
- github.com/docker/docker (Go) Vendor— Affected 28.2.0 to before 28.3.3 Fixed in 28.3.3 Patch available GHSA-x4rx-4gw3-53p4
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mobyproject:moby:*:*:*:*:*:*:*:* | 28.2.0 to before 28.3.3 | Vulnerable | Mobyproject |
- cpe:2.3:a:mobyproject:moby:*:*:*:*:*:*:*:* Versions 28.2.0 to before 28.3.3 Vulnerable ·Mobyproject
Remediation
- Fix · CNA moby (moby) Fixed in 28.3.3
- Fix · GHSA-x4rx-4gw3-53p4 github.com/docker/docker (Go) Fixed in 28.3.3 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Multicluster Engine for Kubernetes | Affected | No fix yet: Fix deferred |
| Multicluster Global Hub | Affected | No fix yet: Fix deferred |
| Red Hat Advanced Cluster Management for Kubernetes 2 | Affected | No fix yet: Fix deferred |
| Red Hat Ceph Storage 5 | Affected | No fix yet: Fix deferred |
| Red Hat Ceph Storage 6 | Affected | No fix yet: Fix deferred |
| Red Hat Ceph Storage 8 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2025-54388
- 2026-10-03 Alias added: GHSA-x4rx-4gw3-53p4
References
More moby vulnerabilities
- TI-2026-14229 Tar extraction in moby/go-archive can write outside the destination directory via link following CVSS 4.0HIGH 7.1
- TI-2021-12512 Moby HyperKit uninitialized memory use in virtio-sock pci_vtsock_proc_tx CVSS 3.1HIGH 7.1
- TI-2024-27462 Moby authz zero length regression CVSS 3.1CRITICAL 10.0
- TI-2024-15672 BuildKit interactive containers API does not validate entitlements check CVSS 3.1CRITICAL 9.8
- TI-2024-15671 BuildKit possible host system access from mount stub cleaner CVSS 3.1CRITICAL 10.0
- TI-2026-26365 Moby: AuthZ plugin bypass with oversized request body CVSS 3.1HIGH 8.8
Sources
- CVE-2025-54388 · CVE Program
- CVE-2025-54388 · NVD
- FIRST EPSS
- GHSA-x4rx-4gw3-53p4 · GitHub Advisory Database · CC BY 4.0
- CVE-2025-54388 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences