High severity · published Feb 16, 2026
CVE-2026-2567
Wavlink WL-NU516U1 nas.cgi sub_401218 stack-based overflow
7.2
CVSS
0.8%
EPSS
No
On KEV
Description
A vulnerability was detected in Wavlink WL-NU516U1 20251208. This vulnerability affects the function sub_401218 of the file /cgi-bin/nas.cgi. Performing a manipulation of the argument User1Passwd results in stack-based buffer overflow. The attack may be initiated remotely. The exploit is now public and may be used.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 55% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WL
WL-NU516U1 · Wavlink
20251208 · source: vendor
WF
Wl-nu516u1 Firmware · Wavlink
through 2025-12-08 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-2567
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-2567
Exploit
https://github.com/Wlz1112/Wavlink-NU516U1-V251208-/blob/main/nas.cgi_User1Passwd.md
Permissions Required
https://vuldb.com/?ctiid.346174
Third Party Advisory
https://vuldb.com/?id.346174
Third Party Advisory
https://vuldb.com/?submit.752016
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