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TI-2026-69246 Aliases CVE-2026-92542

Docker Engine encrypts forged VXLAN datagrams on overlay networks

Priority LOW 29CWE-290Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · High
Fix status
Partial Red Hat: 1 fixed, 5 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-290.

Summary

Docker Engine from 26.0.0 before 29.8.2 and before 25.0.19 is affected, as is the Moby overlay network driver from v2.0.0-beta.0 before v2.0.0-beta.25. The firewall rules that mark VXLAN datagrams for encryption also match forged datagrams sent by user processes (CWE-290). A local user with low privileges on a Linux Swarm node can have forged VXLAN datagrams encrypted with overlay IPsec parameters and delivered into encrypted overlay networks, affecting integrity and availability.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

The firewall rules which mark VXLAN datagrams for encryption indiscriminately match both authentic VXLAN datagrams sent from the kernel and forged datagrams sent by user processes. Any packet sent from the host network namespace of a Linux Swarm node is encrypted with the overlay-network IPsec parameters which meets the following criteria: - UDP datagram - Destination port is the Swarm data-path port - Datagram starts with a VXLAN header for the VNI of an encrypted overlay network which any running container on the node is connected to

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00068 0th percentileScored 2026-11-07
Fix Partial Docker Engine (Docker): 25.0.19, 29.8.2Docker Engine overlay network driver (Docker): v25.0.19+1 more productRed Hat: 1 advisoryRed Hat: 1 fixed, 5 without a fix

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

VendorProductAffected versionsFixed inStatusSource
DockerDocker Enginebefore 25.0.19; 26.0.0 to before 29.8.225.0.19, 29.8.2Patch availableCNA
DockerDocker Engine overlay network driverbefore v25.0.19; v26.0.0 and laterv25.0.19Patch availableCNA
mobyMoby overlay network driverv2.0.0-beta.0 to before v2.0.0-beta.25v2.0.0-beta.25Patch availableCNA
  • Docker Engine VendorDocker Affected before 25.0.19; 26.0.0 to before 29.8.2 Fixed in 25.0.19, 29.8.2 Patch available CNA
  • Docker Engine overlay network driver VendorDocker Affected before v25.0.19; v26.0.0 and later Fixed in v25.0.19 Patch available CNA
  • Moby overlay network driver Vendormoby Affected v2.0.0-beta.0 to before v2.0.0-beta.25 Fixed in v2.0.0-beta.25 Patch available CNA

Remediation

Upgrade Docker Engine to 25.0.19 or 29.8.2, and use overlay network driver fix v25.0.19 for Docker Engine or v2.0.0-beta.25 for Moby. Red Hat fixes Multicluster Global Hub 1.7.4 in RHSA-2026:95517. Red Hat lists Multicluster Engine for Kubernetes, Red Hat Ceph Storage 5, 7 and 9, and Red Hat OpenShift Container Platform 4 as affected, with plan none_available.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

  • Fix · CNA Docker Engine (Docker) Fixed in 25.0.19, 29.8.2
  • Fix · CNA Docker Engine overlay network driver (Docker) Fixed in v25.0.19
  • Fix · CNA Moby overlay network driver (Moby) Fixed in v2.0.0-beta.25

Red Hat 1 advisory

  • RHSA-2026:95517 Released 2026-11-05 · Red Hat rating Important
    Multicluster Global Hub 1.7.4 security update
    • Multicluster Global Hub 1.7.4 registry.redhat.io/multicluster-globalhub/multicluster-globalhub-agent-rhel9, registry.redhat.io/multicluster-globalhub/multicluster-globalhub-grafana-rhel9, registry.redhat.io/multicluster-globalhub/multicluster-globalhub-manager-rhel9 +1

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Multicluster Engine for KubernetesAffectedNo fix yet
Red Hat Ceph Storage 5AffectedNo fix yet
Red Hat Ceph Storage 7AffectedNo fix yet
Red Hat Ceph Storage 9AffectedNo fix yet
Red Hat OpenShift Container Platform 4AffectedNo fix yet
Multicluster Global Hub 1.7.4Fixed RHSA-2026:95517
Not affected: 6 products
  • Multicluster Global Hub 1.7.4
  • Red Hat Advanced Cluster Management for Kubernetes 2
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 9
  • Red Hat OpenShift Container Platform 4
  • Red Hat OpenShift Container Platform 5

Timeline

  1. 2026-10-07 Threatist record created from CVE-2026-92542
  2. 2026-10-07 Weakness changed · CISA ADP
  3. 2026-10-07 CISA SSVC decision points changed
  4. 2026-10-07 Priority changed: MEDIUM → LOW
  5. 2026-10-08 Affected versions changed · Red Hat
  6. 2026-10-08 CVSS score added · Red Hat
  7. 2026-10-09 Affected versions changed · Red Hat
  8. 2026-10-10 Affected versions changed · Red Hat
  9. 2026-10-16 Affected versions changed · Red Hat
  10. 2026-10-27 Affected versions changed · Red Hat
  11. 2026-11-05 Affected versions changed · Red Hat
  12. 2026-11-06 Fix available: Multicluster Global Hub 1.7.4 · Red Hat
  13. 2026-11-06 Fix available: RHSA-2026:95517 · Red Hat

References

Advisory 1

  • TI-2019-11833 Docker Desktop Community Edition before 2.1.0.1 allows local users to gain privileges by… KEVCVSS 3.1HIGH 7.8
  • TI-2019-04061 runc through 1.0-rc6, as used in Docker before 18.09.2 and other products, allows… CVSS 3.1HIGH 8.6
  • TI-2025-08316 Docker Desktop allows unauthenticated access to Docker Engine API from containers CVSS 4.0CRITICAL 9.3
  • TI-2025-02823 Elevation of Privilege in Docker Desktop for Windows during Upgrade due to Insecure Directory Deletion CVSS 4.0HIGH 7.3
  • TI-2026-14229 Tar extraction in moby/go-archive can write outside the destination directory via link following CVSS 4.0HIGH 7.1
  • TI-2023-21271 Docker Machine through 0.16.2 allows an attacker, who has control of a worker node, to… CVSS 3.1MEDIUM 6.5
See all 132 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences