Memory leak in wpanctl can lead to DoS

published 2020-07-07 6y ago modified 2026-06-17 4mo ago also EUVD-2020-29751

cvss: 5.0; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 18%
public exploits: 0; none known

A memory leak in Openthread's wpantund versions up to commit 0e5d1601febb869f583e944785e5685c6c747be7, when used in an environment where wpanctl is directly interfacing with the control driver (eg: debug environments) can allow an attacker to crash the service (DoS). We recommend updating, or to restrict access in your debug environments.

Patch / fix

fixed in 1 links 1

Google LLC wpantund 0e5d1601febb869f583e944785e5685c6c747be7

github.com/openthread/wpantund#468 commit

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Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 18% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.0	CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
NVD	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD	2.0	2.1	AV:L/AC:L/Au:N/C:N/I:N/A:P

Affected products

Google LLC wpantund

Classification

Weakness

CWE-401 Missing Release of Memory after Effective Lifetime

References

github.com /openthread/wpantund/pull/468/commits/0e5d1601febb869f583e944785e5685c6c747be7
patch, third-party-advisory

Sources

CVE List CVE-2020-8916
NVD CVE-2020-8916

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