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CVE-2026-4166

15
FAUCET Score

CVE-2026-4166 identifies a Cross-Site Scripting (XSS) vulnerability in the Wavlink WL-NU516U1 240425, specifically within the /cgi-bin/login.cgi function when processing the 'homepage/hostname' argument. This is a low-severity vulnerability (CVSS 3.5) that can be exploited remotely with low attack complexity, requiring user interaction and low privileges, primarily affecting data integrity. While not currently observed in active exploitation or listed on the KEV catalog, public exploit code for this vulnerability has been disclosed.

Impacted Technologies

VendorProductVersion(s)CPE
WavlinkWL-NU516U1
240425CNA affected

CVSS Data

CVSS version used by this source: 4.0

2.0LOW

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
PASSIVE
VS Confidentiality
NONE
VS Integrity
LOW
VS Availability
NONE
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
PROOF_OF_CONCEPT
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.20%
Probability of exploitation in next 30 days
EPSS Percentile
10.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0020 is in the 20th percentile among its peer group of 406 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, 0.2 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Remediation records are not available for this CVE.

References

github.com / Litengzheng/vul_db/blob/main/WL-NU516U1/vul_14/README.md
github.com / Litengzheng/vul_db/blob/main/WL-NU516U1/vul_15/README.md
vuldb.com
vuldb.com
vuldb.com
vuldb.com