CVE-2026-63252
Published:August 04, 2026
Updated:August 05, 2026
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.
Affected Packages
https://github.com/eclipse-milo/milo.git (GITHUB):
Affected version(s) >=v1.0.0 <v1.1.5Fix Suggestion:
Update to version v1.1.5org.eclipse.milo:milo-transport (JAVA):
Affected version(s) >=1.0.0 <1.1.5Fix Suggestion:
Update to version 1.1.5org.eclipse.milo:milo-stack-core (JAVA):
Affected version(s) >=1.0.0 <1.1.5Fix Suggestion:
Update to version 1.1.5Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Missing Release of Memory after Effective Lifetime