CVE-2023-51142: An issue in ZKTeco BioTime v.8.5.4 and before allows a remote attacker to obtain sensitive information.

This week

HIGH 7.5REMOTEDOWNGRADE

CVE-2023-51142 is a high-severity flaw (CVSS 7.5) affecting biotime. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue in ZKTeco BioTime v.8.5.4 and before allows a remote attacker to obtain sensitive information.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 46%)
CISA exploited list	No
Weakness	CWE-200
Published	2024-04-11
Last modified	2026-07-09

Publisher (CNA): MITRE · Vendor: zkteco

Last updated 2026-07-09 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-04-11 01:22 UTCPublished CVE record published
2026-07-09 01:18 UTCUpdated Record last modified

zkteco biotime DOWNGRADE

Affected: 8.5.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.5.4

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 8.5.4 (Debian / Ubuntu)

apt-cache madison biotime sudo apt install biotime=<VERSION_BEFORE_8.5.4> sudo apt-mark hold biotime

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

dnf --showduplicates list biotime sudo dnf downgrade biotime-<VERSION_BEFORE_8.5.4> sudo dnf versionlock add biotime

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-2023-51142?

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

Is CVE-2023-51142 being exploited?

CVE-2023-51142 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-2023-51142 affect?

CVE-2023-51142 affects biotime. Severity is high (CVSS 7.5). An issue in ZKTeco BioTime v.8.5.4 and before allows a remote attacker to obtain sensitive information.

How urgent is CVE-2023-51142?

Priority 50/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2023-51141 MEDIUM 6.5 DOWNGRADE An issue in ZKTeko BioTime v.8.5.4 and before allows a remote attacker to obtain sensitive information via the
CVE-2024-6523 LOW 3.5 UPGRADE A vulnerability was found in ZKTeco BioTime up to 9.5.2
CVE-2024-13966 HIGH 7.3 UPGRADE ZKTeco BioTime allows unauthenticated attackers to enumerate usernames and log in as any user with a password

References

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