CVSS 4.0
7.0 highCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:LCVE-2026-115538 Protection Mechanism Failure
High (7.0). EPSS 0.3% estimated probability of exploitation activity in the next 30 days.
On this page
Moby's overlay network driver does not restore the iptables rules for encrypted overlay networks after firewalld deletes them. Unlike other Docker Engine networking components, the overlay driver does not handle firewalld reload or start signals over D-Bus. The missing rules cause outgoing VXLAN datagrams to bypass IPsec encryption and remove the protection against incoming cleartext VXLAN traffic. The condition is not logged by dockerd and persists until the encrypted network's last local endpoint is removed and another is added, or dockerd is restarted. Each further firewalld event repeats the condition.
Severity
- EPSS
- 0.3% estimated probability of exploitation activity in the next 30 days; 24th percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
- CWE
- CWE-693 Protection Mechanism Failure
- OWASP Top 10
- A06:2025 Insecure Design
- Published
- Modified
- Assigned by
- Docker (CNA)
- NVD analysis
- Awaiting analysis
- Record from
- the NVD, synced
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Affected
- docker:docker engine
- moby:moby
Versions
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| Docker Engine | before 29.9.3 |
| Moby | before v2.0.0-beta.29 |
Fix and patched versions
- Alpine, Alpaquita: fixed package versions per release
Linux distributions
| Distribution | Release | Package | Fixed in | Advisory |
|---|---|---|---|---|
| Ubuntu | 26.04:LTS, 26.10, Pro:20.04:LTS and 2 more | docker.io, docker.io-app | no fix listed | UBUNTU-CVE-2026-115538 |
| Ubuntu | Pro:16.04:LTS, Pro:18.04:LTS | docker.io | no fix listed | UBUNTU-CVE-2026-115538 |
| Alpine | v3.24 | docker | 29.9.3-r0 | ALPINE-CVE-2026-115538 |
| Azure Linux | 3 | moby-engine | no fix listed | AZL-113564 |
| Alpaquita | stream | docker | 29.9.3-r0 | BELL-CVE-2026-115538 |
From the distributions' data via OSV.dev: Ubuntu Security Notices © Canonical Ltd., CC BY-SA 4.0; the Alpine secdb, CC BY-SA 4.0; Microsoft's Azure Linux vulnerability data, MIT; BellSoft's OSV database, MIT. Modified: reformatted and linked to CVE records. Credits. On the distributions' own pages: Ubuntu · Alpine · Alpaquita.
Attack patterns (CAPEC)
The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits. More on the page of CWE-693 (17).