CVE-2026-3715

A vulnerability was found in Wavlink WL-WN579X3-C 231124. This affects the function sub_40139C of the file /cgi-bin/firewall.cgi. Performing a manipulation of the argument del_flag results in stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been made public and could be used. Upgrading to version 20260226 is able to mitigate this issue. You should upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

CVSS v3 8.8 HIGH
CVSS v2.0 9.0 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

9.0^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:S/C:C/I:C/A:C

Exploitability : 8.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://dl.wavlink.com/firmware/RD/WN579X3C_WAVLINK_V20260226_WO_cb3003b2.bin	Broken Link
https://github.com/Litengzheng/vul_db/blob/main/WL-WN579X3-C/vul_17/README.md	Exploit Third Party Advisory
https://vuldb.com/?ctiid.349660	Permissions Required VDB Entry
https://vuldb.com/?id.349660	Third Party Advisory VDB Entry
https://vuldb.com/?submit.765325	Third Party Advisory VDB Entry

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:wavlink:wl-wn579x3-c_firmware:231124:*:*:*:*:*:*:*

cpe:2.3:h:wavlink:wl-wn579x3-c:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-03-08 07:16

Updated : 2026-03-10 18:55

NVD link : CVE-2026-3715

Mitre link : CVE-2026-3715

CVE.ORG link : CVE-2026-3715

JSON object : View

Products Affected

wavlink

wl-wn579x3-c_firmware
wl-wn579x3-c

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-121

Stack-based Buffer Overflow

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This affects the function sub_40139C of the file /cgi-bin/firewall.cgi. Performing a manipulation of the argument del_flag results in stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been made public and could be used. Upgrading to version 20260226 is able to mitigate this issue. You should upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product."}, {"lang": "es", "value": "Se encontr\u00f3 una vulnerabilidad en Wavlink WL-WN579X3-C 231124. Esto afecta la funci\u00f3n sub_40139C del archivo /cgi-bin/firewall.cgi. Realizar una manipulaci\u00f3n del argumento del_flag resulta en un desbordamiento de b\u00fafer basado en pila. Es posible iniciar el ataque de forma remota. El exploit se ha hecho p\u00fablico y podr\u00eda ser usado. Actualizar a la versi\u00f3n 20260226 puede mitigar este problema. Deber\u00eda actualizar el componente afectado. Se contact\u00f3 al proveedor con antelaci\u00f3n, respondi\u00f3 de manera muy profesional y lanz\u00f3 r\u00e1pidamente una versi\u00f3n corregida del producto afectado."}], "lastModified": "2026-03-10T18:55:03.883", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:wavlink:wl-wn579x3-c_firmware:231124:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7671CD24-8B40-4B35-B1DC-0B863E707F28"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:wavlink:wl-wn579x3-c:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "824705E8-A90D-4055-A3A1-9FAAD0458D75"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "cna@vuldb.com"}