What is CVE-2019-25660?

CVE-2019-25660 is a medium-severity vulnerability in Hainsoft Lanhelper, classified under Out-of-bounds Write. CVSS score: 6.2/10. Published 2026-04-05.

How severe is CVE-2019-25660?

Medium severity. CVSS v3 base score is 6.2 out of 10.

Buffer overflow in Hainsoft Lanhelper

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…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (0.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Hainsoft Lanhelper — versions 1.74

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

ExploitDB-46295 (exploit)
Official Product Homepage (product)
VulnCheck Advisory: LanHelper 1.74 Denial of Service via Buffer Overflow (third-party-advisory)

Frequently asked questions

What is CVE-2019-25660?: CVE-2019-25660 is a medium-severity vulnerability in Hainsoft Lanhelper, classified under Out-of-bounds Write. CVSS score: 6.2/10. Published 2026-04-05.
How severe is CVE-2019-25660?: Medium severity. CVSS v3 base score is 6.2 out of 10.