Wavlink WL-NU516U1 V240425 /cgi-bin/login.cgi sub_401A0C ipaddr stack-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability was found in Wavlink WL-NU516U1 V240425. It has been classified as critical. This issue affects the function sub_401A0C of the file /cgi-bin/login.cgi. Performing a manipulation of the argument ipaddr results in stack-based overflow. This vulnerability is identified as CVE-2026-3613. The attack can be initiated remotely. Additionally, an exploit exists. The vendor was contacted early about this disclosure.

Detailsinfo

A vulnerability, which was classified as critical, was found in Wavlink WL-NU516U1 V240425. This affects the function sub_401A0C of the file /cgi-bin/login.cgi. The manipulation of the argument ipaddr with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on confidentiality, integrity, and availability.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-3613. The exploitability is told to be easy. It is possible to initiate the attack remotely. The exploitation needs additional levels of successful authentication. Technical details and a public exploit are known.

The exploit is shared for download at github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.2
VulDB Meta Temp Score: 6.8

VulDB Base Score: 7.2
VulDB Temp Score: 6.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.2
CNA Vector: 🔒

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

03/05/2026 Advisory disclosed
03/05/2026 +0 days VulDB entry created
03/11/2026 +6 days VulDB entry last update

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2026-3613 (🔒)
GCVE (CVE): GCVE-0-2026-3613
GCVE (VulDB): GCVE-100-349221
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/05/2026 19:26
Updated: 03/11/2026 23:08
Changes: 03/05/2026 19:26 (57), 03/11/2026 23:08 (32)
Complete: 🔍
Submitter: haimianbaobao
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #755341: Wavlink NU516U1 V240425 Stack-based Buffer Overflow (by haimianbaobao)

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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