CVE-2019-25660CWE-787

LanHelper 1.74 Denial of Service via Buffer Overflow

Medium · published April 5, 2026

CVSS v4.0
6.9
EPSS
0%
Percentile
12.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.9 · MEDIUM
Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00228 · 12.8th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2026-04-05T20:45Z
EPSS history
Timeline
  • 05 APR 20:45Z
    LanHelper 1.74 Denial of Service via Buffer Overflow
    cvelistv5