CVE-2025-66176

HIGH

8.8

CVSS Score

Published: January 13, 2026 at 01:47 AM UTC

Updated: July 9, 2026 at 07:35 AM UTC

57 products affected across 1 vendorDs K1T341C FirmwareDs K1T671 FirmwareDs K1T6QT F72 Firmware

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Severity

HIGH8.8

Exploit prediction

EPSS 0.5%

SSVC

No known exploit

Description

There is a Stack 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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Ds K1T105A Firmware · Hikvision

95%

v < 1.3.65

Affected range stops below 1.3.65, so it looks safe — our inference, not a vendor statement

hikvision-ds-k1t105a (same device)

Ds K1T201A Firmware · Hikvision

95%

v < 1.3.65

Affected range stops below 1.3.65, so it looks safe — our inference, not a vendor statement

hikvision-ds-k1t201a (same device)

Ds K1T320 Firmware · Hikvision

95%

v < 3.9.40

Affected range stops below 3.9.40, so it looks safe — our inference, not a vendor statement

hikvision-ds-k1t320 (same device)

Ds K1T321 Firmware · Hikvision

95%

v < 3.9.40

Affected range stops below 3.9.40, so it looks safe — our inference, not a vendor statement

hikvision-ds-k1t321 (same device)

Ds K1T323 Firmware · Hikvision

95%

v < 4.23.41

Affected range stops below 4.23.41, so it looks safe — our inference, not a vendor statement

hikvision-ds-k1t323 (same device)

Ds K1T331 Firmware · Hikvision

95%

v < 3.7.80Versions below V3.7.80

Affected range stops below 3.7.80, so it looks safe — our inference, not a vendor statement

hikvision-ds-k1t331 (same device)

Ds K1T341A Firmware · Hikvision

95%

v < 3.7.80

Affected range stops below 3.7.80, so it looks safe — our inference, not a vendor statement

hikvision-ds-k1t341a (same device)

Ds K1T341B Firmware · Hikvision

95%

v < 3.7.80

Affected range stops below 3.7.80, so it looks safe — our inference, not a vendor statement

hikvision-ds-k1t341b (same device)

Ds K1T341C Firmware · Hikvision

95%

v < 3.3.180Versions below V3.3.180

Affected range stops below 3.3.180, so it looks safe — our inference, not a vendor statement

hikvision-ds-k1t341c (same device)

Ds K1T342 Firmware · Hikvision

95%

v < 4.48.0

Affected range stops below 4.48.0, so it looks safe — our inference, not a vendor statement

hikvision-ds-k1t342 (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://www.hikvision.com/en/support/cybersecurity/security-advisory/buffer-overflow-vulnerabilities-in-some-hikvision-products/

References (2)

Vendor Advisory

Source: cverecord

https://www.hikvision.com/en/support/cybersecurity/security-advisory/buffer-overflow-vulnerabilities-in-some-hikvision-products/

Source: af854a3a-2127-422b-91ae-364da2661108

https://www.talosintelligence.com/vulnerability_reports/TALOS-2025-2281

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHhikvision

Attack Vector: ADJACENT_NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-121

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