CVE-2020-7868Network attack vector

Remote code execution via crafted login parameter

Published Jun 29, 2021 · Updated Aug 4, 2024

Remote code execution in HelpU helpu.ocx allows remote attackers to run code through a crafted parameter supplied during login. The login path passes an improperly validated parameter to the Windows ShellExecuteExA file-execution API, allowing parameter delimiters to alter the requested operation. No prior privileges are required, but the CNA assessment requires user interaction; successful exploitation runs attacker-selected code in the host process context.

CVSS severity9.6
Critical
EPSS probability2.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Remote code execution in HelpU helpu.ocx allows remote attackers to run code through a crafted parameter supplied during login. The login path passes an improperly validated parameter to the Windows ShellExecuteExA file-execution API, allowing parameter delimiters to alter the requested operation. No prior privileges are required, but the CNA assessment requires user interaction; successful exploitation runs attacker-selected code in the host process context.

The record

CVE
CVE-2020-7868
Published
Jun 29, 2021
Updated
Aug 4, 2024
Vendor
HelpU
Product
helpu.ocx
Classifications
CWE-141
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 29, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=2020.6.27.1 <=2020.06.27

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

HelpU · helpu.ocxversion=2020.6.27.1 <=2020.06.27

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.6KrCERT/CCCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
10.0NIST NVDAV:N/AC:L/Au:N/C:C/I:C/A:C

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-141Improper Neutralization of Parameter/Argument Delimiters

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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