CVE-2020-7862: A vulnerability in agent program of HelpU remote control solution could allow an authenticated remote attacker

This month

HIGH 7.0DOWNGRADEDOWNGRADEDOWNGRADE

CVE-2020-7862 is a high-severity flaw (CVSS 7.0) affecting helpuftclient, helpuftserver, helpuserver. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.0 (High)
Attack vector	Local
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.1% (top 34%)
CISA exploited list	No
Weakness	CWE-20, CWE-120
Published	2021-06-24
Last modified	2026-06-17

Publisher (CNA): KrCERT/CC · Vendor: helpu

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-06-24 11:15 UTCPublished CVE record published
2026-06-17 03:25 UTCUpdated Record last modified

helpu helpuftclient DOWNGRADE

Affected: 3.0.0.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.0.0.0

1. Check installed version

apt-cache policy helpuftclient || rpm -q helpuftclient || helpuftclient --version

2. No fixed release: DOWNGRADE to a release before 3.0.0.0 (Debian / Ubuntu)

apt-cache madison helpuftclient sudo apt install helpuftclient=<VERSION_BEFORE_3.0.0.0> sudo apt-mark hold helpuftclient

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list helpuftclient sudo dnf downgrade helpuftclient-<VERSION_BEFORE_3.0.0.0> sudo dnf versionlock add helpuftclient

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

helpu helpuftserver DOWNGRADE

Affected: 3.0.0.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.0.0.0

1. Check installed version

apt-cache policy helpuftserver || rpm -q helpuftserver || helpuftserver --version

2. No fixed release: DOWNGRADE to a release before 3.0.0.0 (Debian / Ubuntu)

apt-cache madison helpuftserver sudo apt install helpuftserver=<VERSION_BEFORE_3.0.0.0> sudo apt-mark hold helpuftserver

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list helpuftserver sudo dnf downgrade helpuftserver-<VERSION_BEFORE_3.0.0.0> sudo dnf versionlock add helpuftserver

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

helpu helpuserver DOWNGRADE

Affected: 1.0.0.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0.0.2

1. Check installed version

apt-cache policy helpuserver || rpm -q helpuserver || helpuserver --version

2. No fixed release: DOWNGRADE to a release before 1.0.0.2 (Debian / Ubuntu)

apt-cache madison helpuserver sudo apt install helpuserver=<VERSION_BEFORE_1.0.0.2> sudo apt-mark hold helpuserver

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list helpuserver sudo dnf downgrade helpuserver-<VERSION_BEFORE_1.0.0.2> sudo dnf versionlock add helpuserver

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

helpu helpuviewer DOWNGRADE

Affected: 2018.5.21.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2018.5.21.0

1. Check installed version

apt-cache policy helpuviewer || rpm -q helpuviewer || helpuviewer --version

2. No fixed release: DOWNGRADE to a release before 2018.5.21.0 (Debian / Ubuntu)

apt-cache madison helpuviewer sudo apt install helpuviewer=<VERSION_BEFORE_2018.5.21.0> sudo apt-mark hold helpuviewer

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list helpuviewer sudo dnf downgrade helpuviewer-<VERSION_BEFORE_2018.5.21.0> sudo dnf versionlock add helpuviewer

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-7862?

helpuftclient: downgrade or apply the listed mitigation; helpuftserver: downgrade or apply the listed mitigation; helpuserver: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-7862 being exploited?

CVE-2020-7862 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-7862 affect?

CVE-2020-7862 affects helpuftclient, helpuftserver, helpuserver. Severity is high (CVSS 7.0). 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.

How urgent is CVE-2020-7862?

Priority 41/100. High severity

References

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