IoT

CVE-2025-66177

8.8

High

EPSS 0.35%Jan 13, 2026

LAN attacker can overflow buffer in Hikvision NVR/DVR/CVR/IPC Search, causing device crash.

common questions

Is CVE-2025-66177 being exploited?

Not confirmed. CVE-2025-66177 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.35% probability of exploitation in the next 30 days.

How severe is CVE-2025-66177?

CVE-2025-66177 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.

Is there a patch for CVE-2025-66177?

Not known from our data. No patch reference has been recorded for CVE-2025-66177, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.

What does CVE-2025-66177 affect?

CVE-2025-66177 affects Hikvision NVR, Hikvision DVR, Hikvision CVR, Hikvision IPC cameras. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.

What should I do about CVE-2025-66177?

Apply firmware update; isolate affected devices; restrict LAN access.

Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.

executive summary

technical analysis

affected

Hikvision NVRHikvision DVRHikvision CVRHikvision IPC cameras

impact

LAN-based buffer overflow can crash or reboot vulnerable devices, disrupting surveillance.

action required

Patch when possible

affected versions

Hikvision DS-2CD1xx1

affectedVersions below V5.7.23_241015 (including V5.7.23_241015)

Hikvision DS-2CD1xxxG0(T)

affectedVersions below V5.7.23_241015 (including V5.7.23_241015)

Hikvision DS-2CD1xxxG2

affectedVersions below V5.7.13_230822 (including V5.7.13_230822)

Hikvision DS-2CD29xxG0

affectedVersions below V5.7.21_240814 (including V5.7.21_240814)

Hikvision DS-2CD2Dx5G1

affectedVersions below V5.7.210_240826 (including V5.7.210_240826)

Hikvision DS-2CD2xx1G0

affectedVersions below V5.7.23_241015 (including V5.7.23_241015)

Hikvision DS-2CD3xx1G0

affectedVersions below V5.7.23_241015 (including V5.7.23_241015)

Hikvision DS-2CD3xx1G2

affectedVersions below V5.7.13_230822 (including V5.7.13_230822)

Hikvision DS-2CD64x5G1

affectedVersions below V5.7.210_240826 (including V5.7.210_240826)

Hikvision DS-2XC6xxxG0

affectedVersions below V5.7.7build241203 (including V5.7.7build241203)

Hikvision DS-2XE6xxxG0

affectedVersions below V5.7.7build241203 (including V5.7.7build241203)

Hikvision DS-710xNI-G1/(xP)/M

affectedBuild date before 250807

Hikvision DS-71xxHGHI-M1(/T)

affectedBuild date before 250807

Hikvision DS-71xxNI-Q1(/xP)

affectedBuild date before 250807

Hikvision DS-71xxNI-Q1(/xP)/M

affectedBuild date before 250807

Hikvision DS-72xxHGHI-M1(/T)

affectedBuild date before 250807

Hikvision DS-76xxNI-Mx

affectedBuild date before 250807

Hikvision DS-76xxNI-Q1(/xP)

affectedBuild date before 250807

Hikvision DS-76xxNI-Q2(/xP)

affectedBuild date before 250807

Hikvision DS-76xxNI-Qx(/xP) including(D)、(E)

affectedBuild date before 250807

Hikvision DS-76xxNXI-Ix/S

affectedBuild date before 250807

Hikvision DS-76xxNXI-Ix/VPro

affectedBuild date before 250807

Hikvision DS-76xxNXI-K1(/xP)

affectedBuild date before 250807

Hikvision DS-76xxNXI-K1(/xP)/VPro

affectedBuild date before 250807

Hikvision DS-76xxNXI-K2(/xP)

affectedBuild date before 250807

Hikvision DS-76xxNXI-K2(/xP)/VPro

affectedBuild date before 250807

Hikvision DS-76xxNXI-Kx(/xP) including(D)、(E)、(B)

affectedBuild date before 250807

Hikvision DS-76xxNXI-Kx(/xP)/Vpro

affectedBuild date before 250807

Hikvision DS-76xxNXI-Mx/VPro

affectedBuild date before 250807

Hikvision DS-77xxNI-Mx

affectedBuild date before 250807

Hikvision DS-77xxNXI-Ix/S

affectedBuild date before 250807

Hikvision DS-77xxNXI-Ix/VPro

affectedBuild date before 250807

Hikvision DS-77xxNXI-K4(/xP)

affectedBuild date before 250807

Hikvision DS-77xxNXI-K4(/xP)/VPro

affectedBuild date before 250807

Hikvision DS-77xxNXI-Kx(/xP) including(D)、(E)、(B)

affectedBuild date before 250807

Hikvision DS-77xxNXI-Kx(/xP)/Vpro

affectedBuild date before 250807

Hikvision DS-86xxNXI-Ix/S

affectedBuild date before 250807

Hikvision DS-86xxNXI-K8(/xP)

affectedBuild date before 250807

Hikvision DS-86xxxNXI-Mx

affectedBuild date before 250807

Hikvision DS-96xxNXI-Ix/S

affectedBuild date before 250807

Hikvision DS-96xxNXI-Mx

affectedBuild date before 250807

Hikvision DS-96xxNXI-Mx/VPro

affectedBuild date before 250807

Hikvision DS-96xxNXI-Sx

affectedBuild date before 250807

Hikvision DS-96xxxNI-Hx

affectedBuild date before 250807

Hikvision DS-96xxxNI-Ix

affectedBuild date before 250807

Hikvision DS-96xxxNXI-Mx

affectedBuild date before 250807

Hikvision DS-96xxxNXI-Sx

affectedBuild date before 250807

Hikvision DS-A806xxSI

affectedBuild date before 250807

Hikvision DS-AT1000SI

affectedBuild date before 250807

Hikvision DS-ExxHGHI-xx

affectedBuild date before 250807

Hikvision HWI-xxxH(C)

affectedVersions below V5.7.23_241015 (including V5.7.23_241015)

Hikvision HWI-xxxxHA

affectedVersions below V5.7.13_230822 (including V5.7.13_230822)

Hikvision iDS-6704NXI/AI

affectedBuild date before 250807

Hikvision iDS-67xxNXI-Mx/AI

affectedBuild date before 250807

Hikvision iDS-67xxNXI-Mx/X

affectedBuild date before 250807

Hikvision iDS-67xxNXI-P1

affectedBuild date before 250807

Hikvision iDS-67xxNXI-S

affectedBuild date before 250807

Hikvision iDS-67xxNXI-S/T

affectedBuild date before 250807

Hikvision iDS-67xxxNXI-Mx/AI

affectedBuild date before 250807

Hikvision iDS-71xxHGHI-M1(/T)

affectedBuild date before 250807

Hikvision iDS-71xxHQHI-M1/S

affectedBuild date before 250807

Hikvision iDS-71xxHQHI-M1/T

affectedBuild date before 250807

Hikvision iDS-71xxHQHI-M1(/T)

affectedBuild date before 250807

Hikvision iDS-71xxHUHI-M1/S

affectedBuild date before 250807

Hikvision iDS-72xxHGHI-M1(/T)

affectedBuild date before 250807

Hikvision iDS-72xxHQHI-M1/E

affectedBuild date before 250807

Hikvision iDS-72xxHQHI-M1/T

affectedBuild date before 250807

Hikvision iDS-72xxHQHI-M1(/T)

affectedBuild date before 250807

Hikvision iDS-72xxHQHI-Mx/XT

affectedBuild date before 250807

Hikvision iDS-72xxHTHI-Mx/XT

affectedBuild date before 250807

Hikvision iDS-72xxHUHI-M1/E

affectedBuild date before 250807

Hikvision iDS-72xxHUHI-M1/T

affectedBuild date before 250807

Hikvision iDS-72xxHUHI-Mx/PXT

affectedBuild date before 250807

Hikvision iDS-72xxHUHI-Mx/X

affectedBuild date before 250807

Hikvision iDS-72xxHUHI-Mx/XT

affectedBuild date before 250807

Hikvision iDS-73xxHQHI-M4/S

affectedBuild date before 250807

Hikvision iDS-73xxHUHI-M4/S

affectedBuild date before 250807

Hikvision iDS-73xxHUHI-M4/S(S)

affectedBuild date before 250807

Hikvision iDS-7608NXI-P2

affectedBuild date before 250807

Hikvision iDS-76xxNXI-Mx/X

affectedBuild date before 250807

Hikvision iDS-77xxNXI-Mx/X

affectedBuild date before 250807

Hikvision iDS-77xxNXI-P4

affectedBuild date before 250807

Hikvision iDS-81xxHQHI-M8/S

affectedBuild date before 250807

Hikvision iDS-81xxHUHI-M8/S(S)

affectedBuild date before 250807

Hikvision iDS-90xxHQHI-M8/S

affectedBuild date before 250807

Hikvision iDS-90xxHUHI-M8/S

affectedBuild date before 250807

Hikvision iDS-90xxHUHI-M8/S(S)

affectedBuild date before 250807

Hikvision iDS-96064NXI-I16

affectedBuild date before 250807

Hikvision iDS-96xxNXI-Mx/AI

affectedBuild date before 250807

Hikvision iDS-96xxNXI-Mx/X

affectedBuild date before 250807

Hikvision iDS-96xxNXI-Px

affectedBuild date before 250807

Hikvision iDS-96xxxNXI-Hx

affectedBuild date before 250807

Hikvision iDS-96xxxNXI-Hx/AI

affectedBuild date before 250807

Hikvision iDS-96xxxNXI-Ix/AI

affectedBuild date before 250807

Hikvision iDS-96xxxNXI-Mx/X

affectedBuild date before 250807

Hikvision iDS-ExxHQHI-xx

affectedBuild date before 250807

Hikvision iDS-ExxHUHI-xx

affectedBuild date before 250807

Hikvision IPC-xxxxH

affectedVersions below V5.7.23_241015 (including V5.7.23_241015)

Hikvision IPC-xxxxHA

affectedVersions below V5.7.13_230822 (including V5.7.13_230822)

As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.

how to fix

Remediation steps are tailored for users whose stack is affected. Add this technology to your stack to see the fix checklist.

references

NVD CVE.org CVE Details Source

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