Command execution via improper serial-port authentication
Published Dec 19, 2025 · Updated Dec 19, 2025
Improper authentication in Hikvision DS-7104HGHI-F1 and DS-7204HGHI-F1 firmware allows physically proximate attackers to run commands. The serial-port authentication path accepts a physically connected attacker without proper authentication, but Hikvision has not disclosed the specific validation failure. Physical access to the DVR and a serial connection are required; the vendor reports command execution but does not describe command privileges or exact effects.
Summary
What happened
Improper authentication in Hikvision DS-7104HGHI-F1 and DS-7204HGHI-F1 firmware allows physically proximate attackers to run commands. The serial-port authentication path accepts a physically connected attacker without proper authentication, but Hikvision has not disclosed the specific validation failure. Physical access to the DVR and a serial connection are required; the vendor reports command execution but does not describe command privileges or exact effects.
The record
- CVE
- CVE-2025-66174
- Published
- Dec 19, 2025
- Updated
- Dec 19, 2025
- Vendor
- Hikvision
- Product
- DS-7204HGHI-F1
- Classifications
- CWE-287, T1200
- Attack vector
- physical
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 19, 2025CVE publishedPublication date reported by the CVE source.
- Dec 19, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=Versions below V4.30.122_201107 (including V4.30.122_201107)
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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