CVE-2026-92542: Docker Engine

Medium severity, CVSS 6.9. EPSS: 0.1% chance of exploitation in the next 30 days.

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

Affected products

• Docker Docker Engine: before 25.0.19 (fixed in 25.0.19); from 26.0.0, before 29.8.2 (fixed in 29.8.2)
• Docker Docker Engine Overlay Network Driver: before v25.0.19 (fixed in v25.0.19); from v26.0.0
• Moby Moby Overlay Network Driver: from v2.0.0-beta.0, before v2.0.0-beta.25 (fixed in v2.0.0-beta.25)

Published 2026-10-07. Last modified 2026-10-08.