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High severity · published Jan 13, 2026
CVE-2025-66176
There is a Buffer overflow Vulnerability in the device Search and Discovery feature of Hikvision Access Control Products
8.8
CVSS
0.5%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 40% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DS
DS-K1T201A/K1T105A · Hikvision
Versions below V1.3.65 · source: vendor
DS
DS-K1T320/DS-K1T321 · Hikvision
Versions below V3.9.40 · source: vendor
DS
DS-K1T323/DS-K1T510 · Hikvision
Versions below V4.23.41 · source: vendor
DS
DS-K1T331 · Hikvision
Versions below V3.7.80 · source: vendor
DS
DS-K1T341A/K1T341B · Hikvision
Versions below V3.7.80 · source: vendor
DS
DS-K1T341C · Hikvision
Versions below V3.3.180 · source: vendor
DS
DS-K1T342/K1T343/K1T344/DS-K1T6QT-F72/F43 · Hikvision
Versions below V4.48.0 · source: vendor
DS
DS-K1T670/K1T673 · Hikvision
Versions below V4.48.0 · source: vendor
DS
DS-K1T671/K5671 · Hikvision
Versions below V3.7.80 · source: vendor
DS
DS-K1T672 · Hikvision
Versions below V3.7.80 · source: vendor
DS
DS-K1T680 · Hikvision
Versions below V3.7.80 · source: vendor
DS
DS-K1T8003 · Hikvision
Versions below V1.4.21 · source: vendor
Affected product
DS
DS-K1T201A/K1T105A
Hikvision
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-66176
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-66176
Vendor Advisory
https://www.hikvision.com/en/support/cybersecurity/security-advisory/buffer-overflow-vulnerabilities-in-some-hikvision-products/
www.talosintelligence.com
https://www.talosintelligence.com/vulnerability_reports/TALOS-2025-2281