Review reviewHigh

CVE-2025-66177

Hikvision DS-96xxxNI-Hx, DS-96xxxNI-Ix, DS-96xxNXI-Sx

There is a Buffer overflow Vulnerability in the device Search and Discovery feature of Hikvision NVR/DVR/CVR/IPC models. If exploited, an attacker on the same local area network (LAN) could cause the device to malfunction by sending specially crafted packets to an unpatched device.

CVSS
8.8
EPSS
0.32%
24.7% percentile
CISA KEV
Not listed
Published
2026.01.13
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.32%
Technical severityCVSS 8.8

Vulnerability overview

There is a Buffer overflow Vulnerability in the device Search and Discovery feature of Hikvision NVR/DVR/CVR/IPC models. If exploited, an attacker on the same local area network (LAN) could cause the device to malfunction by sending specially crafted packets to an unpatched device.

Affected product and versions

Product
Hikvision DS-96xxxNI-Hx, DS-96xxxNI-Ix, DS-96xxNXI-Sx
Affected versions
Build date before 250807, Versions below V5.7.13_230822 (including V5.7.13_230822), Versions below V5.7.210_240826 (including V5.7.210_240826), Versions below V5.7.21_240814 (including V5.7.21_240814), Versions below V5.7.7build241203 (including V5.7.7build241203), Versions below V5.7.23_241015 (including V5.7.23_241015)
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Hikvision DS-96xxxNI-Hx, DS-96xxxNI-Ix, DS-96xxNXI-Sx and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-121