CVE-2026-63252

high

Description

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.

References

https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/598

https://gitlab.eclipse.org/security/cve-assignment/-/work_items/179

https://github.com/eclipse-milo/milo/commit/459715793ec54b0f33367a14f94264500a0d872b

Details

Source: Mitre, NVD

Published: 2026-08-04

Updated: 2026-08-05

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

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

Severity: High

CVSS v4

Base Score: 8.7

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

Severity: High

EPSS

EPSS: 0.00371