CVE-2025-66174

Name: CVE-2025-66174
Creator: NVD / NIST
Published: 2025-12-19T07:16:01.817+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.8/10EPSS 0.31%

Last modified Jun 17, 2026

CVE-2025-66174 is a medium-severity vulnerability rated 6.8/10 on the CVSS scale. There is an improper authentication vulnerability in some Hikvision DVR products. Due to the improper implementation of authentication for the serial port, an attacker with physical access could exploit this vulnerability by connecting to the affected products and run a series of commands.. EPSS estimates a 0.31% chance of exploitation in the next 30 days.

Description

There is an improper authentication vulnerability in some Hikvision DVR products. Due to the improper implementation of authentication for the serial port, an attacker with physical access could exploit this vulnerability by connecting to the affected products and run a series of commands.

Metrics

CVSS 3.1

6.8/10

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.31%

22.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-287

Affected Software

Vendor	Product	Versions
Hikvision	Ds-7104hghi-F1 Firmware	<= 4.30.122_201107
Hikvision	Ds-7204hghi-F1 Firmware	<= 4.30.122_201107

References

https://www.hikvision.com/en/support/cybersecurity/security-advisory/serial-port-privilege-escalation-vulnerabilities-in-some-hikvision-nvr-devices/Vendor Advisory

Timeline

Published: Dec 19, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-66174?

How severe is CVE-2025-66174?

CVE-2025-66174 has a CVSS score of 6.8/10 (MEDIUM severity). The EPSS model estimates a 0.31% probability of exploitation in the next 30 days.

How do I fix CVE-2025-66174?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-66174?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST