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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.

PUBLISHED Reserved 2026-02-15 | Published 2026-02-16 | Updated 2026-02-23 | Assigner VulDB




HIGH: 8.6CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
HIGH: 7.2CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
HIGH: 7.2CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
8.3AV:N/AC:L/Au:M/C:C/I:C/A:C/E:POC/RL:ND/RC:UR

Problem types

Stack-based Buffer Overflow

Memory Corruption

Product status

20251208
affected

Timeline

2026-02-15:Advisory disclosed
2026-02-15:VulDB entry created
2026-02-20:VulDB entry last update

Credits

haimianbaobao (VulDB User) reporter

References

vuldb.com/?id.346174 (VDB-346174 | Wavlink WL-NU516U1 nas.cgi sub_401218 stack-based overflow) vdb-entry technical-description

vuldb.com/?ctiid.346174 (VDB-346174 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.752016 (Submit #752016 | Wavlink NU516U1 V251208 Stack-based Buffer Overflow) third-party-advisory

github.com/...16U1-V251208-/blob/main/nas.cgi_User1Passwd.md exploit

cve.org (CVE-2026-2567)

nvd.nist.gov (CVE-2026-2567)

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