Moby's Firewalld reload removes bridge network isolation
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Partial Red Hat: 1 fixed, 7 without a fix
Attack profile from CVSS 3.1 · NVD. 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. A firewalld vulnerability affects Moby releases before 28.0.0. When firewalld reloads, Docker fails to re-create iptables rules that isolate bridge networks, allowing any container to access all ports on any other container across different bridge networks on the same host. This breaks network segmentation between containers that should be isolated, creating significant risk in multi-tenant environments. Only containers in --internal networks remain protected. Workarounds include reloading firewalld and either restarting the docker daemon, re-creating bridge networks, or using rootless mode. Maintainers anticipate a fix for this issue in version 25.0.13.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- 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 | up to 25.0.12 | — | No fix listed | CNA |
| — | github.com/docker/docker (Go) | before 25.0.13 | 25.0.13 | Patch available | GHSA-4vq8-7jfc-9cvp |
| — | github.com/docker/docker (Go) | 26.0.0-rc1 to before 28.0.0 | 28.0.0 | Patch available | GHSA-4vq8-7jfc-9cvp |
- moby Vendormoby Affected up to 25.0.12 Fixed in — No fix listed CNA
- github.com/docker/docker (Go) Vendor— Affected before 25.0.13 Fixed in 25.0.13 Patch available GHSA-4vq8-7jfc-9cvp
- github.com/docker/docker (Go) Vendor— Affected 26.0.0-rc1 to before 28.0.0 Fixed in 28.0.0 Patch available GHSA-4vq8-7jfc-9cvp
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mobyproject:moby:*:*:*:*:*:*:*:* | before 25.0.13 | Vulnerable | Mobyproject |
- cpe:2.3:a:mobyproject:moby:*:*:*:*:*:*:*:* Versions before 25.0.13 Vulnerable ·Mobyproject
Remediation
- Fix · GHSA-4vq8-7jfc-9cvp github.com/docker/docker (Go) Fixed in 25.0.13 Advisory →
- Fix · GHSA-4vq8-7jfc-9cvp github.com/docker/docker (Go) Fixed in 28.0.0 Advisory →
Red Hat 1 advisory
- RHSA-2026:37387 Released 2026-07-09 · Red Hat rating ImportantRed Hat OpenShift Data Foundation 4.22.0 security, enhancement & bug fix update
- Red Hat Openshift Data Foundation 4.22 registry.redhat.io/odf4/cephcsi-rhel9, registry.redhat.io/odf4/cephcsi-rhel9-operator, registry.redhat.io/odf4/devicefinder-rhel9 +24
Vendor assessments
Red Hat
Red Hat rating: Low. 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 |
| Red Hat Openshift Data Foundation 4.22 | Fixed | RHSA-2026:37387 |
Not affected: 1 product
- Red Hat Openshift Data Foundation 4.22
Timeline
- 2026-10-02 Threatist record created from CVE-2025-54410
- 2026-10-03 Alias added: GHSA-4vq8-7jfc-9cvp
References
Advisory 2
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-2025-54410 · CVE Program
- CVE-2025-54410 · NVD
- FIRST EPSS
- GHSA-4vq8-7jfc-9cvp · GitHub Advisory Database · CC BY 4.0
- CVE-2025-54410 · 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