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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2021-40825

26
FAUCET Score

CVE-2021-40825 describes a default key vulnerability in nLight ECLYPSE (nECY) system Controllers running software prior to version 1.17.21245.754. The vulnerability stems from the system not forcing a change to a pre-configured key upon initial setup, which is used for secure communication between nECY devices and SensorView software. This is a high-severity vulnerability (CVSS 8.6) with a low attack complexity, allowing remote attackers with IP access to modify lighting conditions or update software on lighting devices by leveraging the default key. While the attacker cannot authenticate to or modify the nECY system controller's configuration, the potential for disruption is significant. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.17.21245.754CPE matchmatch criteria
cpe:2.3:o:acuitybrands:nlight_eclypse_system_controller_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.6HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.13%
Probability of exploitation in next 30 days
EPSS Percentile
62.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0112 is in the 41st percentile among its peer group of 51,506 CVEs.

Social Chatter

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

insights.acuitybrands.com / psirt-blog-2369078/nlight-eclypse-default-key-vulnerabiliy
Vendor Advisory
acuitybrands.com / products/detail/588952/nlight/necy-system-controller/nlight-eclypset-system-controller
ProductVendor Advisory