No exploitation reported

CVE-2020-16839

No exploitation reported by the sources we read.

Published2021-07-30
WeaknessCWE-287

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

On Crestron DM-NVX-DIR, DM-NVX-DIR80, and DM-NVX-ENT devices before the DM-XIO/1-0-3-802 patch, the password can be changed by sending an unauthenticated WebSocket request.

Timeline

dates in UTC

2021-07-3014:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-16839?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-16839?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Crestron dm-nvx-dir-160 firmwareversion to verify

Branch	Affected	Fixed in	Source
1.0	= 1.0.1.788	no fix published	NVD

Crestron dm-nvx-dir-80 firmwareversion to verify

Branch	Affected	Fixed in	Source
1.0	= 1.0.1.788	no fix published	NVD

Crestron dm-nvx-dir-ent firmwareversion to verify

Branch	Affected	Fixed in	Source
1.0	= 1.0.1.788	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

support.crestron.comVendor Advisory
www.crestron.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.17.5read 2026-10-23
NVDCVSS 2.05read 2026-10-23
NVDweakness (CWE)CWE-287read 2026-10-23
FIRST EPSSEPSS score1.2 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Published: 2021-07-30
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2020-16839?

On Crestron DM-NVX-DIR, DM-NVX-DIR80, and DM-NVX-ENT devices before the DM-XIO/1-0-3-802 patch, the password can be changed by sending an unauthenticated WebSocket request.

Is CVE-2020-16839 actively exploited?

Active exploitation of CVE-2020-16839 has not been confirmed. Its EPSS score was 1.2% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-16839?

CVE-2020-16839 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

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