Blind VXLAN injection into encrypted overlay networks from cluster peer (Docker Docker Engine)

CVE-2026-92542
MEDIUM 6.9

At a glance

Source
NVD
EPSS
EPSS 0.07 % · percentile 0 ()
State
PUBLISHED
Published
Updated
Assigner
Docker
NVD status
Awaiting Analysis

Description

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

Weaknesses (CWE)

  • CWE-290 — Authentication Bypass by Spoofing

References

Scores

VersionScoreVectorScored by
CVSS 4.0MEDIUM 6.9CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:NDocker
CVSS 4.0MEDIUM 6.9CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XNVD · security@docker.com (Secondary)

European references

Affected products

ProductVersions
Docker · Docker Engineaffected 0 < 25.0.19 ; affected 26.0.0 < 29.8.2
Docker · Docker Engine overlay network driveraffected 0 < v25.0.19 ; affected v26.0.0 < *
Moby · Moby overlay network driveraffected v2.0.0-beta.0 < v2.0.0-beta.25

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD