CVE-2025-66174

State: Published
Severity: 6.5 Medium
Published: Dec 19, 2025
Updated: Dec 19, 2025
Reserved: Nov 24, 2025

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.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L	hikvision

Weaknesses

CWE-287 Improper Authentication

Affected Products

Product	Versions
DS-7104HGHI-F1Hikvision	Versions below V4.30.122_201107 (including V4.30.122_201107)Affected
DS-7204HGHI-F1Hikvision	Versions below V4.30.122_201107 (including V4.30.122_201107)Affected

References

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

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