Auth bypass in Hikvision Ds-7104hghi-F1
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.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L.
EPSS exploit prediction
EPSS: 0.004 (26.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: -0.000
Affected products
- Hikvision Ds-7104hghi-F1 — versions Versions below V4.30.122_201107 (including V4.30.122_201107)
- Hikvision Ds-7104hghi-F1 Firmware
- Hikvision Ds-7204hghi-F1 — versions Versions below V4.30.122_201107 (including V4.30.122_201107)
- Hikvision Ds-7204hghi-F1 Firmware
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2025-66174?
- CVE-2025-66174 is a medium-severity vulnerability in Hikvision Ds-7104hghi-F1, classified under Improper Authentication. CVSS score: 6.5/10. Published 2025-12-19.
- How severe is CVE-2025-66174?
- Medium severity. CVSS v3 base score is 6.5 out of 10.