CVE-2018-4046: An exploitable denial-of-service vulnerability exists in the helper service of Clean My Mac X, version 4.04, d

Routine

MEDIUM 5.5DOWNGRADE

CVE-2018-4046 is a medium-severity flaw (CVSS 5.5) affecting cleanmymac x. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An exploitable denial-of-service vulnerability exists in the helper service of Clean My Mac X, version 4.04, due to improper input validation. A user with local access can use this vulnerability to terminate a privileged helper application. An attacker would need local access to the machine for a successful exploit.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 76%)
CISA exploited list	No
Weakness	CWE-20
Published	2019-01-10
Last modified	2026-06-17

Publisher (CNA): Talos · Vendor: macpaw

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

Am I affected?

Timeline

2019-01-10 15:29 UTCPublished CVE record published
2026-06-17 01:58 UTCUpdated Record last modified

macpaw cleanmymac x DOWNGRADE

Affected: 4.04

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.04

1. Check installed version

apt-cache policy cleanmymac-x || rpm -q cleanmymac-x || cleanmymac-x --version

2. No fixed release: DOWNGRADE to a release before 4.04 (Debian / Ubuntu)

apt-cache madison cleanmymac-x sudo apt install cleanmymac-x=<VERSION_BEFORE_4.04> sudo apt-mark hold cleanmymac-x

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

dnf --showduplicates list cleanmymac-x sudo dnf downgrade cleanmymac-x-<VERSION_BEFORE_4.04> sudo dnf versionlock add cleanmymac-x

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-2018-4046?

cleanmymac x: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-4046 being exploited?

CVE-2018-4046 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-2018-4046 affect?

CVE-2018-4046 affects cleanmymac x. Severity is medium (CVSS 5.5). An exploitable denial-of-service vulnerability exists in the helper service of Clean My Mac X, version 4.04, due to improper input validation. A user with local access can use this vulnerability to terminate a privileged helper application.

How urgent is CVE-2018-4046?

Priority 25/100. No elevated risk signals yet.

Related CVEs

CVE-2019-5011 MEDIUM 5.5 DOWNGRADE An exploitable privilege escalation vulnerability exists in the helper service CleanMyMac X, version 4.20, due
CVE-2018-4047 MEDIUM 5.5 DOWNGRADE An exploitable privilege escalation vulnerability exists in the helper service of Clean My Mac X, version 4.04
CVE-2018-4045 MEDIUM 5.5 DOWNGRADE An exploitable privilege escalation vulnerability exists in the helper service of Clean My Mac X, version 4.04
CVE-2018-4044 MEDIUM 5.5 DOWNGRADE An exploitable privilege escalation vulnerability exists in the helper service of Clean My Mac X, version 4.04
CVE-2018-4043 MEDIUM 5.5 DOWNGRADE An exploitable privilege escalation vulnerability exists in the Clean My Mac X, version 4.04, helper service d

References

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