CVE-2019-25660

LanHelper 1.74 contains a local buffer overflow vulnerability that allows attackers to crash the application by sending excessively long input strings. Attackers can exploit the Form Send Message feature by pasting 6000 bytes of data into the Message text field to trigger a denial of service condition.

CVSS v3 6.2 MEDIUM

6.2^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.5 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
http://www.hainsoft.com/	Broken Link
https://www.exploit-db.com/exploits/46295	Exploit VDB Entry
https://www.vulncheck.com/advisories/lanhelper-denial-of-service-via-buffer-overflow	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:hainsoft:lanhelper:*:*:*:*:*:*:*:*

History

24 Jul 2026, 22:10

Type	Values Removed	Values Added
Summary		(es) LanHelper 1.74 contiene una vulnerabilidad local de desbordamiento de búfer que permite a los atacantes bloquear la aplicación enviando cadenas de entrada excesivamente largas. Los atacantes pueden explotar la función Form Send Message pegando 6000 bytes de datos en el campo de texto Message para desencadenar una condición de denegación de servicio.

20 Apr 2026, 18:15

Type	Values Removed	Values Added
References	~~() http://www.hainsoft.com/ -~~	() http://www.hainsoft.com/ - Broken Link
References	~~() https://www.exploit-db.com/exploits/46295 -~~	() https://www.exploit-db.com/exploits/46295 - Exploit, VDB Entry
References	~~() https://www.vulncheck.com/advisories/lanhelper-denial-of-service-via-buffer-overflow -~~	() https://www.vulncheck.com/advisories/lanhelper-denial-of-service-via-buffer-overflow - Third Party Advisory
CPE		cpe:2.3:a:hainsoft:lanhelper::::::::
First Time		Hainsoft Hainsoft lanhelper

05 Apr 2026, 21:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-05 21:16

Updated : 2026-07-24 22:10

NVD link : CVE-2019-25660

Mitre link : CVE-2019-25660

CVE.ORG link : CVE-2019-25660

JSON object : View

Products Affected

hainsoft

lanhelper

CWE

CWE-787

Out-of-bounds Write

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