CVE-2025-66174 Auth bypass in DS-7104HGHI-F1
An attacker with physical access can bypass serial port authentication to execute arbitrary commands on Hikvision DVR devices.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-66174?
CVE-2025-66174 is a medium-severity authentication bypass vulnerability in Hikvision DS-7104HGHI-F1, published on 19 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-287
Which versions are affected by CVE-2025-66174?
It affects 2 products.
Products include Hikvision Ds-7104hghi-F1 Firmware, Hikvision Ds-7204hghi-F1 Firmware.
How do I fix CVE-2025-66174?
No fix has been published for CVE-2025-66174 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2025-66174 being exploited?
There is no known exploitation of CVE-2025-66174 in the wild and no public exploit code.
Other vulnerabilities in Hikvision DS-7104HGHI-F1
Sources
Also known as GHSA-7h47-c92x-cf8w.