CVE-2026-92542 vulnerability in Docker Products
Published on October 7, 2026
Blind VXLAN injection into encrypted overlay networks from cluster peer
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
Vulnerability Analysis
CVE-2026-92542 is exploitable with local system access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
Products Associated with CVE-2026-92542
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Affected Versions
Docker Engine:- Before 25.0.19 is affected.
- Version 26.0.0 and below 29.8.2 is affected.
- Before v25.0.19 is affected.
- Version v26.0.0 and below * is affected.
- Version v2.0.0-beta.0 and below v2.0.0-beta.25 is affected.