Medium severity · published Oct 7, 2026
CVE-2026-92542
Blind VXLAN injection into encrypted overlay networks from cluster peer
6.9
CVSS
0.1%
EPSS
No
On KEV
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
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 0% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DE
Docker Engine · Docker
before 25.0.19; 26.0.0 before 29.8.2 · source: vendor
DE
Docker Engine overlay network driver · Docker
before v25.0.19; v26.0.0 · source: vendor
MO
Moby overlay network driver · Moby
v2.0.0-beta.0 before v2.0.0-beta.25 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-92542
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-92542
vendor-advisory
https://github.com/moby/moby/security/advisories/GHSA-6m9p-4h64-m6vh
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