CVE-2025-66174

Published: Dec 19, 2025

Modified: Dec 19, 2025

PUBLISHED

CVSS v3.1

6.5

MEDIUM

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.

Vendor	Product	Versions
Hikvision	DS-7104HGHI-F1	affected `Versions below V4.30.122_201107 (including V4.30.122_201107)`
Hikvision	DS-7204HGHI-F1	affected `Versions below V4.30.122_201107 (including V4.30.122_201107)`

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

Low

References

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

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CVE-2025-66174

Description

Affected Products

CVSS v3.1 Details

References