HelpU Overflow Vulnerability

published 2021-06-24 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-28794

cvss: 7.0; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.1%; EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits: 0; none known

A vulnerability in agent program of HelpU remote control solution could allow an authenticated remote attacker to execute arbitrary commands This vulnerability is due to insufficient input santization when communicating customer process.

Exploit prediction

1.11% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.0	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	6.5	AV:N/AC:L/Au:S/C:P/I:P/A:P

Affected products

Helpu,inc HelpuViewer.exe
Helpu,inc HelpuServer.exe
Helpu,inc HelpuFTClient.dll
Helpu,inc HelpuFTServer.dll

Classification

Weakness

CWE-20 Improper Input Validation
CWE-120 Buffer Copy without Checking Size of Input

References

helpu.co.kr /customer/download.html
vendor-advisory
krcert.or.kr /krcert/secNoticeView.do?bulletin_writing_sequence=36094
third-party-advisory

Sources

CVE List CVE-2020-7862
NVD CVE-2020-7862

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary