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Vulnerabilities

Vulnerability · CVE-2025-66174

There is an improper authentication vulnerability in some Hikvision DVR products.

Published Dec 19, 2025 · catalog updated Dec 19, 2025 · Hikvision DS-7104HGHI-F1

Last checked Nov 2, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-66174. EPSS is 0.35%. Act only if a listed version of Hikvision DS-7104HGHI-F1 is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium6.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.35%
Remediation
Advisory link
Affected products
vendor Hikvision DS-7104HGHI-F1 Versions below V4.30.122_201107 (including V4.30.122_201107)

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Hikvision DS-7104HGHI-F1 Versions below V4.30.122_201107 (including V4.30.122_201107)Versions below V4.30.122_201107 (including V4.30.122_201107)

How to fix CVE-2025-66174

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-66174. EPSS is 0.35%. Act only if a listed version of Hikvision DS-7104HGHI-F1 is installed.

Which versions are affected?

Compare what you have installed with Hikvision DS-7104HGHI-F1 Versions below V4.30.122_201107 (including V4.30.122_201107) Versions below V4.30.122_201107 (including V4.30.122_201107). Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.35%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 19, 2025 · EUVD

    Detected

    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.

  2. Dec 19, 2025 · EUVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2025-66174

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-66174

    30-day exploitation probability 0.35%

    first.org
  • EUVDVulnerability recordEUVD-2025-204451

    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

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 2, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 2, 2026
  • CVE.orgNov 2, 2026
  • EUVDNov 1, 2026