CVE-2018-20957: The Bluetooth Low Energy (BLE) subsystem on Tapplock devices before 2018-06-12 allows replay attacks.

Q: How do I fix CVE-2018-20957?

one\+ firmware: upgrade to 2018-06-12. Exact commands for each OS are on this page.

Q: Is CVE-2018-20957 being exploited?

CVE-2018-20957 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2018-20957 affect?

CVE-2018-20957 affects one\+ firmware. Severity is high (CVSS 8.8). The Bluetooth Low Energy (BLE) subsystem on Tapplock devices before 2018-06-12 allows replay attacks.

Q: How urgent is CVE-2018-20957?

Priority 51/100. High severity; Public exploit reference

This month

HIGH 8.8UPGRADE

CVE-2018-20957 is a high-severity flaw (CVSS 8.8) affecting one\+ firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Bluetooth Low Energy (BLE) subsystem on Tapplock devices before 2018-06-12 allows replay attacks.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 38%)
CISA exploited list	No
Weakness	CWE-284
Published	2019-08-08
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: tapplock

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

Am I affected?

Timeline

2019-08-08 21:15 UTCPublished CVE record published
2026-06-17 01:53 UTCUpdated Record last modified

tapplock one\+ firmware UPGRADE

Affected: < 2018-06-12

Fixed in: 2018-06-12

Safe to downgrade to: no unaffected older release

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.

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-2018-20957?

one\+ firmware: upgrade to 2018-06-12. Exact commands for each OS are on this page.

Is CVE-2018-20957 being exploited?

CVE-2018-20957 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-2018-20957 affect?

CVE-2018-20957 affects one\+ firmware. Severity is high (CVSS 8.8). The Bluetooth Low Energy (BLE) subsystem on Tapplock devices before 2018-06-12 allows replay attacks.

How urgent is CVE-2018-20957?

Priority 51/100. High severity; Public exploit reference

Software pages

Bluetooth vulnerabilities

References

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