CVE-2019-16924: The Nulock application 1.5.0 for mobile devices sends a cleartext password over Bluetooth, which allows remote

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HIGH 8.8DOWNGRADE

CVE-2019-16924 is a high-severity flaw (CVSS 8.8) affecting nulock. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Nulock application 1.5.0 for mobile devices sends a cleartext password over Bluetooth, which allows remote attackers (after sniffing the network) to take control of the lock.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	8.8 (High)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 48%)
CISA exploited list	No
Weakness	CWE-319
Published	2019-09-27
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: nuvending

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

Am I affected?

Timeline

2019-09-27 18:15 UTCPublished CVE record published
2026-06-17 02:22 UTCUpdated Record last modified

nuvending nulock DOWNGRADE

Affected: 1.5.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.5.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.5.0 (Debian / Ubuntu)

apt-cache madison nulock sudo apt install nulock=<VERSION_BEFORE_1.5.0> sudo apt-mark hold nulock

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

dnf --showduplicates list nulock sudo dnf downgrade nulock-<VERSION_BEFORE_1.5.0> sudo dnf versionlock add nulock

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-2019-16924?

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

Is CVE-2019-16924 being exploited?

CVE-2019-16924 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-2019-16924 affect?

CVE-2019-16924 affects nulock. Severity is high (CVSS 8.8). The Nulock application 1.5.0 for mobile devices sends a cleartext password over Bluetooth, which allows remote attackers (after sniffing the network) to take control of the lock.

How urgent is CVE-2019-16924?

Priority 49/100. High severity; Public exploit reference

Software pages

Bluetooth vulnerabilities

References

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