High severity · published May 9, 2026
CVE-2026-8191
Wavlink NU516U1 adm.cgi wifi_region os command injection
8.8
CVSS
8.7%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)8.7% · higher than 95% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NU
NU516U1 · Wavlink
M16U1_V240425 · source: vendor
WF
Wl-nu516u1 Firmware · Wavlink
m16u1_v240425 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-8191
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-8191
Exploit
https://github.com/wudipjq/my_vuln/blob/main/Wavlink/vuln_4/4.md
Third Party Advisory
https://vuldb.com/submit/800730
Third Party Advisory
https://vuldb.com/vuln/362343
Permissions Required
https://vuldb.com/vuln/362343/cti
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