CVE-2025-66174

MEDIUM

Hikvision DVR - Auth Bypass

Title source: llm

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.

References (1)

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

Scores

CVSS v3 6.5

EPSS 0.0008

EPSS Percentile 23.1%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-287

Status published

Products (2)

hikvision/ds-7104hghi-f1_firmware < 4.30.122_201107

hikvision/ds-7204hghi-f1_firmware < 4.30.122_201107

Published Dec 19, 2025

Tracked Since Feb 18, 2026