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Vulnerability record · CVE-2025-66176 · published 13 January 2026

CVE-2025-66176: Hikvision ds-k1t331 firmware stack-based buffer overflow vulnerability

Hikvision · Ds K1t331 Firmware

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.

8.8 CVSS 3.1 High EPSS 0.48% · top 61.4% CWE-121 · Stack-based buffer overflow
8.8CVSS 3.1 base score
0.48%EPSS exploitation probability, 30 days
NoNot in CISA KEV
28Affected product versions listed by NVD
2References
9 Jul 2026Last modified by NVD

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.

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

Affected products

28 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.hikvision.com/en/support/cybersecurity/security-advisory/buffer-overflow-vulnerabilities-in-some-hikvision-p Vendor Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2025-2281

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Source: NIST National Vulnerability Database (record CVE-2025-66176), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.