Vulnerability in Moby
CVE-2025-54388
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 The vulnerability only affects explicitly published ports - unpublished ports remain protected.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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (18.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 18.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.000
Affected products
- Moby — versions >= 28.2.0, < 28.3.3
- Mobyproject Moby
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/moby/moby/security/advisories/GHSA-x4rx-4gw3-53p4 (Vendor Advisory)
- github.com/moby/moby/pull/50506 (Patch, Issue Tracking)
- github.com/moby/moby/commit/bea959c7b793b32a893820b97c4eadc7c87fabb0 (Patch)
Frequently asked questions
- What is CVE-2025-54388?
- CVE-2025-54388 is a medium-severity vulnerability in Moby, classified under CWE-909. CVSS score: 4.6/10. Published 2025-07-30.
- How severe is CVE-2025-54388?
- Medium severity. CVSS v3 base score is 4.6 out of 10.
- Is CVE-2025-54388 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.