CVE-2026-63252

In Eclipse Milo versions 0.6.0 through 1.1.4, UASC server transport handlers fail to release retained partial message chunks when a channel disconnects, allowing a remote unauthenticated client to exhaust pooled direct memory by repeatedly sending incomplete chunks and disconnecting, potentially terminating the server.

CVSS 4.0

8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.6% chance of exploitation in the next 30 days; higher than 47% of CVEs (scores of 2026-10-25)

CWE

CWE-401

Published

2026-08-04

Modified

2026-10-23

Record from

the NVD, synced 2026-10-24

Affected

• eclipse:milo

References

• https://github.com/eclipse-milo/milo/commit/459715793ec54b0f33367a14f94264500a0d872b
• https://gitlab.eclipse.org/security/cve-assignment/-/work_items/179
• https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/598

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