CVE-2025-66176
High
Description
There is a Buffer overflow Vulnerability in the device Search and Discovery feature of Hikvision Access Control Products. 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.
SeverityHigh
CVSS8.8
Exploit probability—
ProductHikvision Ds-k1t331 Firmware
PublishedJan 13, 2026
First seenJan 13, 2026
Weakness typeCWE-121CWE-121
How to fix
Update
- hikvision ds-k1t331_firmware3.7.80 or later
- hikvision ds-k1t341a_firmware3.7.80 or later
- hikvision ds-k1t341b_firmware3.7.80 or later
- hikvision ds-k1t671_firmware3.7.80 or later
- hikvision ds-k5671_firmware3.7.80 or later
- hikvision ds-k1t672_firmware3.7.80 or later
- hikvision ds-k1t680_firmware3.7.80 or later
- hikvision ds-k1t981_firmware3.7.80 or later
- hikvision ds-k1t341c_firmware3.3.180 or later
- hikvision ds-k1t670_firmware4.48.0 or later
- hikvision ds-k1t673_firmware4.48.0 or later
- hikvision ds-k1t804a_firmware1.4.22 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| hikvision ds-k1t331_firmware | v < 3.7.80 | 3.7.80 |
| hikvision ds-k1t341a_firmware | v < 3.7.80 | 3.7.80 |
| hikvision ds-k1t341b_firmware | v < 3.7.80 | 3.7.80 |
| hikvision ds-k1t671_firmware | v < 3.7.80 | 3.7.80 |
| hikvision ds-k5671_firmware | v < 3.7.80 | 3.7.80 |
| hikvision ds-k1t672_firmware | v < 3.7.80 | 3.7.80 |
| hikvision ds-k1t680_firmware | v < 3.7.80 | 3.7.80 |
| hikvision ds-k1t981_firmware | v < 3.7.80 | 3.7.80 |
| hikvision ds-k1t341c_firmware | v < 3.3.180 | 3.3.180 |
| hikvision ds-k1t670_firmware | v < 4.48.0 | 4.48.0 |
| hikvision ds-k1t673_firmware | v < 4.48.0 | 4.48.0 |
| hikvision ds-k1t8003_firmware | v ≤ 1.4.21 | — |
| hikvision ds-k1t804a_firmware | v < 1.4.22 | 1.4.22 |
| hikvision ds-k1t804b_firmware | v < 1.4.23 | 1.4.23 |
| hikvision ds-k1t201a_firmware | v < 1.3.65 | 1.3.65 |
| hikvision ds-k1t105a_firmware | v < 1.3.65 | 1.3.65 |
| hikvision ds-k1t342_firmware | v < 4.48.0 | 4.48.0 |
| hikvision ds-k1t343_firmware | v < 4.48.0 | 4.48.0 |
| hikvision ds-k1t344_firmware | v < 4.48.0 | 4.48.0 |
| hikvision ds-k1t6qt-f72_firmware | v < 4.48.0 | 4.48.0 |
| hikvision ds-k1t6qt-f43_firmware | v < 4.48.0 | 4.48.0 |
| hikvision ds-k1t8005_firmware | v < 3.25.40 | 3.25.40 |
| hikvision ds-k1t808_firmware | v < 3.25.40 | 3.25.40 |
| hikvision ds-k1t320_firmware | v < 3.9.40 | 3.9.40 |
| hikvision ds-k1t321_firmware | v < 3.9.40 | 3.9.40 |
| hikvision ds-k1t323_firmware | v < 4.23.41 | 4.23.41 |
| hikvision ds-k1t510_firmware | v < 4.23.41 | 4.23.41 |
| hikvision ds-k5033_firmware | v < 4.37.40 | 4.37.40 |
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