CVE-2026-18589

A vulnerability was found in Wavlink WL-NU516U1 708c073-mt7628. This impacts the function change_password of the file nas.cgi. The manipulation of the argument User1Passwd results in stack-based buffer overflow. The attack can be executed remotely. The exploit has been made public and could be used. The affected component should be upgraded. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

CVSS v3 9.8 CRITICAL
CVSS v2.0 10.0 HIGH

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

10.0^/10

CVSS v2.0 : HIGH

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

Exploitability : 10.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://dl.wavlink.com/firmware/RD/WINSTAR_NU516U1-WO-A-2026-07-13-4b8a21f-mt7628-squashfs-sysupgrade.bin
https://github.com/oduoke567/WAVLINK-NU516U1-2026-05-1/blob/main/report2.md
https://vuldb.com/cve/CVE-2026-18589
https://vuldb.com/submit/850501
https://vuldb.com/vuln/385417
https://vuldb.com/vuln/385417/cti

Configurations

No configuration.

History

23 Oct 2026, 22:10

Type	Values Removed	Values Added
Summary		(es) Se encontró una vulnerabilidad en Wavlink WL-NU516U1 708c073-mt7628. Esto afecta la función change_password del archivo nas.cgi. La manipulación del argumento User1Passwd resulta en desbordamiento de búfer basado en pila. El ataque puede ser ejecutado remotamente. El exploit se ha hecho público y podría ser usado. El componente afectado debería ser actualizado. El proveedor se contactó tempranamente, respondió de una manera muy profesional y rápidamente lanzó una versión corregida del producto afectado.

Information

Published : 2026-08-03 07:16

Updated : 2026-10-23 22:10

NVD link : CVE-2026-18589

Mitre link : CVE-2026-18589

CVE.ORG link : CVE-2026-18589

JSON object : View

Products Affected

No product.

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 impacts the function change_password of the file nas.cgi. The manipulation of the argument User1Passwd results in stack-based buffer overflow. The attack can be executed remotely. The exploit has been made public and could be used. The affected component should be upgraded. 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-NU516U1 708c073-mt7628. Esto afecta la funci\u00f3n change_password del archivo nas.cgi. La manipulaci\u00f3n del argumento User1Passwd resulta en desbordamiento de b\u00fafer basado en pila. El ataque puede ser ejecutado remotamente. El exploit se ha hecho p\u00fablico y podr\u00eda ser usado. El componente afectado deber\u00eda ser actualizado. El proveedor se contact\u00f3 tempranamente, respondi\u00f3 de una manera muy profesional y r\u00e1pidamente lanz\u00f3 una versi\u00f3n corregida del producto afectado."}], "lastModified": "2026-10-23T22:10:00.160", "sourceIdentifier": "cna@vuldb.com"}