CVE-2025-66174

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
6.5 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
hikvisionCNA
6.5 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
CISA-ADPADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 21%
VendorProductVersion
hikvisionds-7104hghi-f1_firmware
𝑥
≤ 4.30.122_201107
hikvisionds-7204hghi-f1_firmware
𝑥
≤ 4.30.122_201107
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://www.hikvision.com/en/support/cybersecurity/security-advisory/serial-port-privilege-escalation-vulnerabilities-in-some-hikvision-nvr-devices/