CVE-2022-30111: Due to the use of an insecure algorithm for rolling codes in MCK Smartlock 1.0, allows attackers to unlock the

Routine

MEDIUM 6.8DOWNGRADE

CVE-2022-30111 is a medium-severity flaw (CVSS 6.8) affecting mck smartlock. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Due to the use of an insecure algorithm for rolling codes in MCK Smartlock 1.0, allows attackers to unlock the mechanism via replay attacks.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.8 (Medium)
Attack vector	Physical
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 75%)
CISA exploited list	No
Weakness	CWE-327
Published	2022-05-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: mck smartlock project

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

Am I affected?

Timeline

2022-05-18 18:15 UTCPublished CVE record published
2026-06-17 04:43 UTCUpdated Record last modified

mck smartlock project mck smartlock DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy mck-smartlock || rpm -q mck-smartlock || mck-smartlock --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison mck-smartlock sudo apt install mck-smartlock=<VERSION_BEFORE_1.0> sudo apt-mark hold mck-smartlock

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

dnf --showduplicates list mck-smartlock sudo dnf downgrade mck-smartlock-<VERSION_BEFORE_1.0> sudo dnf versionlock add mck-smartlock

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-2022-30111?

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

Is CVE-2022-30111 being exploited?

CVE-2022-30111 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-2022-30111 affect?

CVE-2022-30111 affects mck smartlock. Severity is medium (CVSS 6.8). Due to the use of an insecure algorithm for rolling codes in MCK Smartlock 1.0, allows attackers to unlock the mechanism via replay attacks.

How urgent is CVE-2022-30111?

Priority 35/100. Public exploit reference

References

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