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CVE-2020-16839

19
FAUCET Score

CVE-2020-16839 describes an authentication bypass vulnerability in Crestron DM-NVX-DIR, DM-NVX-DIR80, and DM-NVX-ENT devices prior to the DM-XIO/1-0-3-802 patch. An unauthenticated attacker can change device passwords by sending a crafted WebSocket request. This vulnerability carries a CVSS score of 7.5 (High), indicating a network-based attack with low complexity and high impact on integrity, as it allows unauthorized password modification. While no public exploit code or active exploitation has been observed, and community discussion is minimal, the potential for unauthorized access remains a concern for affected systems.

Impacted Technologies

VendorProductVersion(s)CPE
1.0.1.788CPE matchmatch criteria
cpe:2.3:o:crestron:dm-nvx-dir-80_firmware:1.0.1.788:*:*:*:*:*:*:*
1.0.1.788CPE matchmatch criteria
cpe:2.3:o:crestron:dm-nvx-dir-160_firmware:1.0.1.788:*:*:*:*:*:*:*
1.0.1.788CPE matchmatch criteria
cpe:2.3:o:crestron:dm-nvx-dir-ent_firmware:1.0.1.788:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.18%
Probability of exploitation in next 30 days
EPSS Percentile
64.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0118 is in the 43rd percentile among its peer group of 51,506 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

support.crestron.com
Vendor Advisory
crestron.com / Software-Firmware/Firmware/DigitalMedia/DM-XIO/1-0-3-802
Permissions Required
security.crestron.com
Broken Link
crestron.com / Security/Security-at-Crestron
Vendor Advisory