CVE-2020-7862Network attack vector

Authenticated command execution via unsanitized interprocess input

Published Jun 24, 2021 · Updated Sep 16, 2024

Buffer overflow in HelpU remote-control components through 2020.11.20.0 allows remote authenticated users to execute arbitrary commands. The agent program fails to sanitize input exchanged with the customer process, but the receiving routine and buffer operation are undisclosed. Access to an authenticated remote-support session is required, and successful exploitation runs attacker-chosen commands on the customer endpoint.

CVSS severity8.8
High
EPSS probability1.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in HelpU remote-control components through 2020.11.20.0 allows remote authenticated users to execute arbitrary commands. The agent program fails to sanitize input exchanged with the customer process, but the receiving routine and buffer operation are undisclosed. Access to an authenticated remote-support session is required, and successful exploitation runs attacker-chosen commands on the customer endpoint.

The record

CVE
CVE-2020-7862
Published
Jun 24, 2021
Updated
Sep 16, 2024
Vendor
HelpU
Product
HelpuFTServer.dll
Classifications
CWE-20, CWE-120, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 24, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.0.0.0 2020.11.20.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

HelpU · HelpuFTServer.dllversion=3.0.0.0 2020.11.20.0
HelpU · HelpuFTClient.dllversion=3.0.0.0 2020.11.20.0
HelpU · HelpuServer.exeversion=1.0.0.2 <=2020.11.20.0
HelpU · HelpuViewer.exeversion=2018.5.21.0 <=2020.11.20.0

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.0KrCERT/CCCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
6.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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