CVE-2022-50794: SOUND4 IMPACT/FIRST/PULSE/Eco versions 2.x and below contain an unauthenticated command injection vulnerabilit

This week

CRITICAL 9.8REMOTEMITIGATEMITIGATEMITIGATE

CVE-2022-50794 is a critical-severity flaw (CVSS 9.8) affecting impact firmware, pulse firmware, first firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SOUND4 IMPACT/FIRST/PULSE/Eco versions 2.x and below contain an unauthenticated command injection vulnerability in the username parameter. Attackers can exploit index.php and login.php scripts by injecting arbitrary shell commands through the HTTP POST 'username' parameter to execute system commands.

Why this priority

Critical severity
Public exploit reference
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	3.7% (top 10%)
CISA exploited list	No
Weakness	CWE-78
Published	2025-12-30
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: sound4

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

Am I affected?

Timeline

2025-12-30 23:15 UTCPublished CVE record published
2026-06-17 05:24 UTCUpdated Record last modified

sound4 impact firmware MITIGATE

Affected: 2.15 · 1.69

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.69

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

sound4 pulse firmware MITIGATE

Affected: 2.15 · 1.69

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.69

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

sound4 first firmware MITIGATE

Affected: 2.15 · 1.69

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.69

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

sound4 impact eco firmware MITIGATE

Affected: 1.16

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.16

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

sound4 pulse eco firmware MITIGATE

Affected: 1.16

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.16

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

sound4 big voice4 firmware MITIGATE

Affected: 1.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.2

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora 46 · amule · FIXED · 3.2.0-1.fc46 · FEDORA-2026-4feb2647b0 · source

sudo dnf upgrade --advisory=FEDORA-2026-4feb2647b0

Fedora ELN · mysql9.7 · FIXED · 9.7.4-3.eln159 · FEDORA-2026-ea1c50e49b · source

sudo dnf upgrade --advisory=FEDORA-2026-ea1c50e49b

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Write-up: www.zeroscience.mk/en/vulnerabilities/ZSL-2022-5739.php

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-2022-50794?

impact firmware: mitigate or apply the listed mitigation; pulse firmware: mitigate or apply the listed mitigation; first firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2022-50794 being exploited?

CVE-2022-50794 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-2022-50794 affect?

CVE-2022-50794 affects impact firmware, pulse firmware, first firmware. Severity is critical (CVSS 9.8). SOUND4 IMPACT/FIRST/PULSE/Eco versions 2.x and below contain an unauthenticated command injection vulnerability in the username parameter. Attackers can exploit index.php and login.php scripts by injecting arbitrary shell commands through t

How urgent is CVE-2022-50794?

Priority 70/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

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References

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