# CVE-2026-63252

## Summary

- **CVE ID:** CVE-2026-63252
- **Severity:** HIGH
- **CVSS Score:** 8.7 (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)
- **CWE:** CWE-401
- **Published:** Aug 4, 2026
- **Last Modified:** Aug 4, 2026

## 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.

## Affected Products

- Eclipse Foundation — Eclipse Milo (0.6.0)

## References

- [CNA](https://github.com/eclipse-milo/milo/commit/459715793ec54b0f33367a14f94264500a0d872b)
- [CNA](https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/598)
- [CNA](https://gitlab.eclipse.org/security/cve-assignment/-/work_items/179)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.42%
- **EPSS Percentile:** 35.6

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._