CVE-2026-3613 Details
Description
A vulnerability was identified in Wavlink WL-NU516U1 V240425. This vulnerability affects the function sub_401A0C of the file /cgi-bin/login.cgi. Such manipulation of the argument ipaddr leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure.
A stack-based buffer overflow vulnerability has been identified in the Wavlink WL-NU516U1 router, specifically in the V240425 firmware. The issue arises in the 'sub_401A0C' function of the '/cgi-bin/login.cgi' file, where the 'ipaddr' parameter is manipulated, leading to an overflow condition. This vulnerability can be exploited remotely, and a public exploit is available.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 9, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/Wlz1112/WAVLINK-NU516-V240425/blob/main/ipaddr_Stack%20Buffer%20Overflow.md | [email protected] | ExploitThird Party Advisory |
| https://vuldb.com/?ctiid.349221 | [email protected] | Permissions RequiredVDB Entry |
| https://vuldb.com/?id.349221 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/?submit.755341 | [email protected] | Third Party AdvisoryVDB Entry |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | [email protected] |
| CWE-121 | Stack-based Buffer Overflow | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| wavlink wl-nu516u1 firmware | m16u1_v240425 |
CPE
Remediation
| |
| wavlink wl-nu516u1 | All versions |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Mar 10, 2026 | Initial Analysis | [email protected] |
| Mar 6, 2026 | New CVE Received | [email protected] |