CVE-2025-66176
Hikvision
- Published
- 13 January 2026
- Last modified
- 9 July 2026
- CVSS
- 8.8 v3.1
- Severity
- high
- EPSS
- 0.5% (40th pct)
- CISA KEV
- Not listed
- NVD status
- Modified
- Weaknesses
- CWE-121
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
Exploitation
Not listed in the CISA Known Exploited Vulnerabilities catalogue as of 2026.09.04. That is an absence of confirmed public exploitation, not evidence that exploitation has not occurred. EPSS models a 0.5% probability of exploitation activity in the next 30 days.
Affected products
| Product | Vendor | Type | Versions named |
|---|---|---|---|
| Ds-k1t105a | Hikvision | unknown | < 1.3.65 |
| Ds-k1t201a | Hikvision | unknown | < 1.3.65 |
| Ds-k1t320 | Hikvision | unknown | < 3.9.40 |
| Ds-k1t321 | Hikvision | unknown | < 3.9.40 |
| Ds-k1t323 | Hikvision | unknown | < 4.23.41 |
| Ds-k1t331 | Hikvision | unknown | < 3.7.80 |
| Ds-k1t341a | Hikvision | unknown | < 3.7.80 |
| Ds-k1t341b | Hikvision | unknown | < 3.7.80 |
| Ds-k1t341c | Hikvision | unknown | < 3.3.180, <= 3.3.8_build230112 |
| Ds-k1t342 | Hikvision | unknown | < 4.48.0 |
| Ds-k1t343 | Hikvision | unknown | < 4.48.0 |
| Ds-k1t344 | Hikvision | unknown | < 4.48.0 |
| Ds-k1t510 | Hikvision | unknown | < 4.23.41 |
| Ds-k1t670 | Hikvision | unknown | < 4.48.0 |
| Ds-k1t671 | Hikvision | unknown | < 3.7.80, <= 3.2.30_build221223 |
| Ds-k1t672 | Hikvision | unknown | < 3.7.80 |
| Ds-k1t673 | Hikvision | unknown | < 4.48.0 |
| Ds-k1t680 | Hikvision | unknown | < 3.7.80 |
| Ds-k1t6qt-f43 | Hikvision | unknown | < 4.48.0 |
| Ds-k1t6qt-f72 | Hikvision | unknown | < 4.48.0 |
| Ds-k1t8003 | Hikvision | unknown | <= 1.4.21 |
| Ds-k1t8005 | Hikvision | unknown | < 3.25.40 |
| Ds-k1t804a | Hikvision | unknown | < 1.4.22 |
| Ds-k1t804b | Hikvision | unknown | < 1.4.23 |
| Ds-k1t808 | Hikvision | unknown | < 3.25.40 |
| Ds-k1t981 | Hikvision | unknown | < 3.7.80 |
| Ds-k5033 | Hikvision | unknown | < 4.37.40 |
| Ds-k5671 | Hikvision | unknown | < 3.7.80 |
References
Vendor advisory and patch
Record assembled from NVD, CISA KEV 2026.09.04 and FIRST EPSS 2026-09-04. Affected products are those NVD's CPE configuration names that fall inside this site's scope; a CVE may affect products outside it.