CVE-2026-8191: wavlink nu516u1 Command Injection
Vulnerability summary
CVE-2026-8191 is a high (CVSS 8.8) Command Injection vulnerability in wavlink nu516u1. EPSS estimates a 8.51% chance of exploitation in the next 30 days, higher than 95% of scored vulnerabilities. 1 public exploit is recorded.
Timeline
- 09-05-2026PublishedVulnerability first disclosed.
- 12-05-2026Last modifiedVulnerability information updated.
Description
A vulnerability was identified in Wavlink NU516U1 M16U1_V240425. This affects the function wifi_region of the file /cgi-bin/adm.cgi. Such manipulation of the argument skiplist1/skiplist2 leads to os command injection. The attack can be launched remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure.
CVSS metrics
7 scores · 2 sources · 4 versions- NVDNIST2.1LowCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/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:XDiffers
- CVE.orgCNA6.3MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:RDiffers
- NVDNIST6.5MediumAV:N/AC:L/Au:S/C:P/I:P/A:P
EPSS trend
Probability
8.51%
Chance of exploitation in the next 30 days
Percentile
95%
Versus all other CVEs
30-day change
+2.12 pp
From 6.39% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundMy Vuln
Maturity: poc
Weaknesses
CWE · root cause- CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.
- CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.
Affected systems
Wavlink2 products
- nu516u1M16U1_V240425
- wl-nu516u1_firmwarem16u1_v240425
1 vendor · 2 products