Is CVE-2021-39434 actively exploited?

CVE-2021-39434 has no public evidence of in-the-wild exploitation as of 2025-04-24.

What is the CVSS score for CVE-2021-39434?

CVE-2021-39434 has a CVSS score of 7.5 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

How do I patch CVE-2021-39434?

Patch guidance is available from zkteco security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2021-39434.

Fix CVE-2021-39434 - HIGH zkteco zktime

Q: Which products are affected by CVE-2021-39434?

8 products: zkteco zktime, zkteco zktime, zkteco zktime, zkteco zktime, zkteco zktime, and 3 more.

Description

A default username and password for an administrator account was discovered in ZKTeco ZKTime 10.0 through 11.1.0, builds 20180901, 20190510.1, 20200309.3, 20200930, 20201231, and 20210220.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: none
Availability: none
Weaknesses: CWE-521 CWE-521

Metadata

Primary Vendor: ZKTECO
Published: 12/6/2022
Last Modified: 4/24/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

zkteco : zktimezkteco : zktimezkteco : zktimezkteco : zktimezkteco : zktimezkteco : zktimezkteco : zktimezkteco : zktime

Remediation Guidance

Executive Summary

View on NIST NVD