CVE-2019-25660

LanHelper 1.74 Denial of Service via Buffer Overflow

CVSS 6.9 MEDIUMEPSS 0.2%CWE-787

Vexday Risk Score

33Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

Exploit maturity

Proof of concept

Public proof of concept exists, but not yet automated.

CVSS 6.9EPSS 0.2%KEV nãoPoC públicaNuclei —Metasploit —Patch —

Lifecycle

05 Apr 2026Published on NVD

Recommendation: Plan a near-term fix — a public PoC already exists.

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:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Affected products

Hainsoft · LanHelper

public PoCs found — 1

cve_referencewww.exploit-db.com/exploits/46295unverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

References

https://www.exploit-db.com/exploits/46295 https://www.vulncheck.com/advisories/lanhelper-denial-of-service-via-buffer-overflow http://www.hainsoft.com/