CVE-2025-66177

Device malfunction via crafted discovery packets

Published Jan 13, 2026 · Updated Jan 13, 2026

Buffer overflow in Hikvision Search and Discovery allows remote attackers on the same LAN to cause malfunctions in affected NVR, DVR, CVR, and IPC devices. Hikvision has not disclosed the packet field, parsing routine, or unchecked memory operation that overruns the stack buffer. Reachability requires adjacent-network access to the discovery service; the documented consequence is device malfunction, with no more specific failure mode published.

CVSS severity8.8

High

EPSS probability0.35%

Next 30 days · Sep 16, 2026

Known exploitationUnconfirmed

Based on sourced intelligence

Hinoki checkNot available

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Summary

What happened

The record

CVE: CVE-2025-66177
Published: Jan 13, 2026
Updated: Jan 13, 2026

Vendor: Hikvision
Product: DS-96xxNXI-Mx
Classifications: CWE-121, T1498

Attack vector: adjacent
Privileges: unauthenticated

Timeline

How it unfolded

Jan 13, 2026CVE publishedPublication date reported by the CVE source.
Jan 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

Affected versionversion=Build date before 250807

What conditions does exploitation require?

Attack vectoradjacent

Required privilegesunauthenticated

What is affected?

Hikvision · DS-96xxNXI-Mxversion=Build date before 250807

Hikvision · DS-86xxNXI-Ix/Sversion=Build date before 250807

Hikvision · DS-2CD2xx1G0version=Versions below V5.7.23_241015 (including V5.7.23_241015)

Hikvision · iDS-73xxHQHI-M4/Sversion=Build date before 250807

Hikvision · iDS-ExxHQHI-xxversion=Build date before 250807

Hikvision · DS-71xxNI-Q1(/xP)/Mversion=Build date before 250807

Hikvision · iDS-67xxNXI-P1version=Build date before 250807

Hikvision · DS-96xxxNI-Hxversion=Build date before 250807

Hikvision · DS-72xxHGHI-M1(/T)version=Build date before 250807

Hikvision · DS-76xxNI-Q1(/xP)version=Build date before 250807

Hikvision · DS-96xxNXI-Ix/Sversion=Build date before 250807

Hikvision · DS-710xNI-G1/(xP)/Mversion=Build date before 250807

Hikvision · iDS-96064NXI-I16version=Build date before 250807

Hikvision · iDS-72xxHUHI-M1/Eversion=Build date before 250807

Hikvision · DS-ExxHGHI-xxversion=Build date before 250807

Hikvision · iDS-76xxNXI-Mx/Xversion=Build date before 250807

Hikvision · iDS-72xxHTHI-Mx/XTversion=Build date before 250807

Hikvision · DS-76xxNI-Qx Series NVRversion=Build date before 250807

Hikvision · HWI-xxxH(C)version=Versions below V5.7.23_241015 (including V5.7.23_241015)

Hikvision · iDS-67xxNXI-Sversion=Build date before 250807

Hikvision · iDS-72xxHQHI-M1/Eversion=Build date before 250807

Hikvision · iDS-81xxHUHI-M8/S(S)version=Build date before 250807

Hikvision · DS-2CD29xxG0version=Versions below V5.7.21_240814 (including V5.7.21_240814)

Hikvision · iDS-77xxNXI-P4version=Build date before 250807

Hikvision · DS-77xxNXI-K4(/xP)/VProversion=Build date before 250807

Hikvision · DS-2CD3xx1G0version=Versions below V5.7.23_241015 (including V5.7.23_241015)

Hikvision · DS-96xxNXI-Sxversion=Build date before 250807

Hikvision · DS-77xxNXI-Kx(/xP)/VProversion=Build date before 250807

Hikvision · IPC-xxxxHAversion=Versions below V5.7.13_230822 (including V5.7.13_230822)

Hikvision · iDS-71xxHQHI-M1/Sversion=Build date before 250807

Hikvision · iDS-96xxNXI-Mx/AIversion=Build date before 250807

Hikvision · iDS-96xxNXI-Mx/Xversion=Build date before 250807

Hikvision · DS-76xxNXI-K1(/xP)version=Build date before 250807

Hikvision · iDS-72xxHQHI-M1/Tversion=Build date before 250807

Hikvision · DS-77xxNXI-Kx Series AcuSense NVRversion=Build date before 250807

Hikvision · iDS-81xxHQHI-M8/Sversion=Build date before 250807

Hikvision · iDS-90xxHQHI-M8/Sversion=Build date before 250807

Hikvision · iDS-72xxHUHI-Mx/PXTversion=Build date before 250807

Hikvision · DS-77xxNXI-K4(/xP)version=Build date before 250807

Hikvision · DS-86xxxNXI-Mxversion=Build date before 250807

Hikvision · DS-76xxNXI-Kx(/xP)/VProversion=Build date before 250807

Hikvision · DS-2CD1xx1version=Versions below V5.7.23_241015 (including V5.7.23_241015)

Hikvision · DS-A806xxSIversion=Build date before 250807

Hikvision · iDS-72xxHUHI-M1/Tversion=Build date before 250807

Hikvision · DS-77xxNXI-Ix/Sversion=Build date before 250807

Hikvision · IPC-xxxxHversion=Versions below V5.7.23_241015 (including V5.7.23_241015)

Hikvision · iDS-71xxHGHI-M1(/T)version=Build date before 250807

Hikvision · DS-2CD3xx1G2version=Versions below V5.7.13_230822 (including V5.7.13_230822)

Hikvision · DS-71xxNI-Q1(/xP)version=Build date before 250807

Hikvision · iDS-67xxNXI-Mx/AIversion=Build date before 250807

Hikvision · DS-2CD64x5G1version=Versions below V5.7.210_240826 (including V5.7.210_240826)

Hikvision · DS-76xxNXI-K2(/xP)version=Build date before 250807

Hikvision · iDS-67xxNXI-S/Tversion=Build date before 250807

Hikvision · DS-77xxNI-Mxversion=Build date before 250807

Hikvision · DS-76xxNXI-K2(/xP)/VProversion=Build date before 250807

Hikvision · iDS-96xxxNXI-Ix/AIversion=Build date before 250807

Hikvision · iDS-72xxHGHI-M1(/T)version=Build date before 250807

Hikvision · DS-2XE6xxxG0version=Versions below V5.7.7build241203 (including V5.7.7build241203)

Hikvision · DS-76xxNI-Mxversion=Build date before 250807

Hikvision · DS-96xxNXI-Mx/VProversion=Build date before 250807

Hikvision · iDS-73xxHUHI-M4/S(S)version=Build date before 250807

Hikvision · DS-86xxNXI-K8(/xP)version=Build date before 250807

Hikvision · iDS-67xxxNXI-Mx/AIversion=Build date before 250807

Hikvision · iDS-96xxxNXI-Mx/Xversion=Build date before 250807

Hikvision · DS-77xxNXI-Ix/VProversion=Build date before 250807

Hikvision · iDS-96xxxNXI-Hxversion=Build date before 250807

Hikvision · iDS-67xxNXI-Mx/Xversion=Build date before 250807

Hikvision · DS-76xxNXI-Kx Series AcuSense NVRversion=Build date before 250807

Hikvision · iDS-96xxNXI-Pxversion=Build date before 250807

Hikvision · DS-2CD1xxxG0(T)version=Versions below V5.7.23_241015 (including V5.7.23_241015)

Hikvision · iDS-ExxHUHI-xxversion=Build date before 250807

Hikvision · DS-76xxNXI-Mx/VProversion=Build date before 250807

Hikvision · iDS-73xxHUHI-M4/Sversion=Build date before 250807

Hikvision · iDS-72xxHUHI-Mx/Xversion=Build date before 250807

Hikvision · iDS-71xxHQHI-M1/Tversion=Build date before 250807

Hikvision · DS-2CD2Dx5G1version=Versions below V5.7.210_240826 (including V5.7.210_240826)

Hikvision · HWI-xxxxHAversion=Versions below V5.7.13_230822 (including V5.7.13_230822)

Hikvision · DS-AT1000SIversion=Build date before 250807

Hikvision · iDS-72xxHUHI-Mx/XTversion=Build date before 250807

Hikvision · DS-76xxNXI-Ix/VProversion=Build date before 250807

Hikvision · DS-76xxNI-Q2(/xP)version=Build date before 250807

Hikvision · iDS-6704NXI/AIversion=Build date before 250807

Hikvision · iDS-90xxHUHI-M8/S(S)version=Build date before 250807

Hikvision · iDS-72xxHQHI-Mx/XTversion=Build date before 250807

Hikvision · DS-96xxxNI-Ixversion=Build date before 250807

Hikvision · DS-2CD1xxxG2version=Versions below V5.7.13_230822 (including V5.7.13_230822)

Hikvision · DS-71xxHGHI-M1(/T)version=Build date before 250807

Hikvision · DS-96xxxNXI-Sxversion=Build date before 250807

Hikvision · iDS-96xxxNXI-Hx/AIversion=Build date before 250807

Hikvision · DS-2XC6xxxG0version=Versions below V5.7.7build241203 (including V5.7.7build241203)

Hikvision · DS-76xxNXI-K1(/xP)/VProversion=Build date before 250807

Hikvision · iDS-71xxHUHI-M1/Sversion=Build date before 250807

Hikvision · iDS-90xxHUHI-M8/Sversion=Build date before 250807

Hikvision · iDS-7608NXI-P2version=Build date before 250807

Hikvision · DS-76xxNXI-Ix/Sversion=Build date before 250807

Hikvision · DS-96xxxNXI-Mxversion=Build date before 250807

Hikvision · iDS-77xxNXI-Mx/Xversion=Build date before 250807

Published CVSS scores

8.8Hangzhou Hikvision Digital Technology Co., Ltd.CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026

Latest reporting daySep 16, 2026

Latest daily unique IPsUnavailable

Prior 30-day averageUnavailable

SourceShadowserver honeypots (KEV)

Vectoradjacent

Privilegesunauthenticated

Known exploitationUnconfirmed

Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow

T1498Network Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

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