CVE-2025-66176

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.

Score

CVSS 3.1 8.8 High

Status

Modified - hsrc@hikvision.com

Published

2026-01-13

Last modified

2026-07-09

Weaknesses

CWE-121

Affected products

• Ds-k1t105a Firmware (Hikvision)
• Ds-k1t201a Firmware (Hikvision)
• Ds-k1t201ak1t105a (Hikvision)
• Ds-k1t320 Firmware (Hikvision)
• Ds-k1t320ds-k1t321 (Hikvision)
• Ds-k1t321 Firmware (Hikvision)
• Ds-k1t323 Firmware (Hikvision)
• Ds-k1t323ds-k1t510 (Hikvision)
• Ds-k1t331 (Hikvision)
• Ds-k1t331 Firmware (Hikvision)
• Ds-k1t341a Firmware (Hikvision)
• Ds-k1t341ak1t341b (Hikvision)
• Ds-k1t341b Firmware (Hikvision)
• Ds-k1t341c (Hikvision)
• Ds-k1t341c Firmware (Hikvision)
• Ds-k1t342 Firmware (Hikvision)
• Ds-k1t342k1t343k1t344ds-k1t6qt-f72f43 (Hikvision)
• Ds-k1t343 Firmware (Hikvision)
• Ds-k1t344 Firmware (Hikvision)
• Ds-k1t510 Firmware (Hikvision)
• Ds-k1t670 Firmware (Hikvision)
• Ds-k1t670k1t673 (Hikvision)
• Ds-k1t671 Firmware (Hikvision)
• Ds-k1t671k5671 (Hikvision)
• Ds-k1t672 (Hikvision)
• Ds-k1t672 Firmware (Hikvision)
• Ds-k1t673 Firmware (Hikvision)
• Ds-k1t680 (Hikvision)
• Ds-k1t680 Firmware (Hikvision)
• Ds-k1t6qt-f43 Firmware (Hikvision)
• Ds-k1t6qt-f72 Firmware (Hikvision)
• Ds-k1t8003 (Hikvision)
• Ds-k1t80038004 (Hikvision)
• Ds-k1t8003 Firmware (Hikvision)
• Ds-k1t8005 Firmware (Hikvision)
• Ds-k1t8005ds-k1t808 (Hikvision)
• Ds-k1t804a (Hikvision)
• Ds-k1t804a Firmware (Hikvision)
• Ds-k1t804b (Hikvision)
• Ds-k1t804b Firmware (Hikvision)
• Ds-k1t808 Firmware (Hikvision)
• Ds-k1t981 (Hikvision)
• Ds-k1t981 Firmware (Hikvision)
• Ds-k5033 (Hikvision)
• Ds-k5033 Firmware (Hikvision)
• Ds-k5671 Firmware (Hikvision)

References

• https://www.hikvision.com/en/support/cybersecurity/security-advisory/buffer-overflow-vulnerabilities-in-some-hikvision-…
• https://www.talosintelligence.com/vulnerability_reports/TALOS-2025-2281