CVE-2018-16242: oBike relies on Hangzhou Luoping Smart Locker to lock bicycles, which allows attackers to bypass the locking m

Routine

MEDIUM 5.3MITIGATEDOWNGRADE

CVE-2018-16242 is a medium-severity flaw (CVSS 5.3) affecting smart locker firmware, obike-stationless bike sharing. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

oBike relies on Hangzhou Luoping Smart Locker to lock bicycles, which allows attackers to bypass the locking mechanism by using Bluetooth Low Energy (BLE) to replay ciphertext based on a predictable nonce used in the locking protocol.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Adjacent network
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 48%)
CISA exploited list	No
Weakness	CWE-294
Published	2018-09-14
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: o.bike

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

Am I affected?

Timeline

2018-09-14 21:29 UTCPublished CVE record published
2026-06-17 01:43 UTCUpdated Record last modified

o.bike smart locker firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

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.

o.bike obike-stationless bike sharing DOWNGRADE

Affected: 2.5.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.5.4

1. Check installed version

apt-cache policy obike-stationless-bike-sharing || rpm -q obike-stationless-bike-sharing || obike-stationless-bike-sharing --version

2. No fixed release: DOWNGRADE to a release before 2.5.4 (Debian / Ubuntu)

apt-cache madison obike-stationless-bike-sharing sudo apt install obike-stationless-bike-sharing=<VERSION_BEFORE_2.5.4> sudo apt-mark hold obike-stationless-bike-sharing

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

dnf --showduplicates list obike-stationless-bike-sharing sudo dnf downgrade obike-stationless-bike-sharing-<VERSION_BEFORE_2.5.4> sudo dnf versionlock add obike-stationless-bike-sharing

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-2018-16242?

smart locker firmware: mitigate or apply the listed mitigation; obike-stationless bike sharing: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-16242 being exploited?

CVE-2018-16242 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-2018-16242 affect?

CVE-2018-16242 affects smart locker firmware, obike-stationless bike sharing. Severity is medium (CVSS 5.3). oBike relies on Hangzhou Luoping Smart Locker to lock bicycles, which allows attackers to bypass the locking mechanism by using Bluetooth Low Energy (BLE) to replay ciphertext based on a predictable nonce used in the locking protocol.

How urgent is CVE-2018-16242?

Priority 37/100. Public exploit reference

Software pages

Bluetooth vulnerabilities

References

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