CVE-2019-12942: TTLock devices do not properly block guest access in certain situations where the network connection to the cl

Routine

MEDIUM 6.5MITIGATE

CVE-2019-12942 is a medium-severity flaw (CVSS 6.5) affecting ttlock. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

TTLock devices do not properly block guest access in certain situations where the network connection to the cloud is unavailable.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 45%)
CISA exploited list	No
Weakness	CWE-862
Published	2019-09-10
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: ttlock

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

Am I affected?

Timeline

2019-09-10 21:15 UTCPublished CVE record published
2026-06-17 02:15 UTCUpdated Record last modified

ttlock ttlock MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

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

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

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-2019-12942?

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

Is CVE-2019-12942 being exploited?

CVE-2019-12942 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-2019-12942 affect?

CVE-2019-12942 affects ttlock. Severity is medium (CVSS 6.5). TTLock devices do not properly block guest access in certain situations where the network connection to the cloud is unavailable.

How urgent is CVE-2019-12942?

Priority 37/100. No elevated risk signals yet.

Related CVEs

CVE-2019-12943 HIGH 8.1 MITIGATE TTLock devices do not properly restrict password-reset attempts, leading to incorrect access control and discl

References

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