What is CVE-2019-9004?

CVE-2019-9004 is a high-severity vulnerability in Eclipse Wakaama, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.5/10. Published 2019-02-22.

How severe is CVE-2019-9004?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2019-9004 known to be exploited?

13 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Eclipse Wakaama

CVE-2019-9004

In Eclipse Wakaama (formerly liblwm2m) 1.0, core/er-coap-13/er-coap-13.c in lwm2mserver in the LWM2M server mishandles invalid options, leading to a memory leak. Processing of a single crafted packet leads to leaking (wasting) 24 bytes of memory. This can lead to termination of the LWM2M server after exhausting all available memory.

Published 2019-02-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.015 (73.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 73.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000

Affected products

Eclipse Wakaama — versions 1.0

Weakness classification (CWE)

CWE-401 — Missing Release of Memory after Effective Lifetime

Public proof-of-concept exploits

References

github.com/eclipse/wakaama/issues/425 (Exploit, Patch, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2019-9004?: CVE-2019-9004 is a high-severity vulnerability in Eclipse Wakaama, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 7.5/10. Published 2019-02-22.
How severe is CVE-2019-9004?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2019-9004 known to be exploited?: 13 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.