VDB-340543 · CVE-2025-66177 · GCVE-0-2025-66177

Hikvision DS-96xxxNI-Hx Discovery Feature stack-based overflow

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.6	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Hikvision DS-96xxxNI-Hx, DS-96xxxNI-Ix, DS-96xxNXI-Sx, DS-96xxxNXI-Sx, DS-76xxNXI-Mx, VPro, DS-96xxNXI-Mx, DS-76xxNI-Mx, DS-77xxNI-Mx, DS-96xxxNXI-Mx, DS-86xxxNXI-Mx, DS-76xxNXI-Ix, S, DS-77xxNXI-Ix, DS-86xxNXI-Ix, DS-96xxNXI-Ix, DS-76xxNXI-Kx including 、、, DS-77xxNXI-Kx including 、、, DS-76xxNXI-Kx , Vpro, DS-77xxNXI-Kx , DS-76xxNI-Qx including 、, DS-71xxNI-Q1 , M, DS-71xxNI-Q1, DS-710xNI-G1, , DS-76xxNI-Q1, DS-76xxNI-Q2, DS-76xxNXI-K1, DS-76xxNXI-K2, DS-77xxNXI-K4, DS-86xxNXI-K8, DS-76xxNXI-K1 , DS-76xxNXI-K2 , DS-77xxNXI-K4 , iDS-71xxHGHI-M1, iDS-72xxHGHI-M1, iDS-71xxHQHI-M1, iDS-72xxHQHI-M1, iDS-72xxHQHI-Mx, XT, iDS-72xxHUHI-Mx, iDS-72xxHTHI-Mx, iDS-90xxHUHI-M8, iDS-73xxHUHI-M4, iDS-81xxHUHI-M8, DS-71xxHGHI-M1, DS-72xxHGHI-M1, DS-ExxHGHI-xx, E, T, iDS-73xxHQHI-M4, iDS-81xxHQHI-M8, iDS-90xxHQHI-M8, iDS-ExxHQHI-xx, iDS-71xxHUHI-M1, iDS-72xxHUHI-M1, X, PXT, iDS-ExxHUHI-xx, DS-A806xxSI, DS-AT1000SI, iDS-96xxxNXI-Hx, iDS-96064NXI-I16, iDS-96xxxNXI-Ix, AI, iDS-67xxNXI-Mx, iDS-76xxNXI-Mx, iDS-77xxNXI-Mx, iDS-96xxNXI-Mx, iDS-96xxxNXI-Mx, iDS-67xxxNXI-Mx, iDS-67xxNXI-S, iDS-6704NXI, iDS-67xxNXI-P1, iDS-7608NXI-P2, iDS-77xxNXI-P4, iDS-96xxNXI-Px, DS-2CD1xxxG2, DS-2CD3xx1G2, HWI-xxxxHA, IPC-xxxxHA, DS-2CD2Dx5G1, DS-2CD64x5G1, DS-2CD29xxG0, DS-2XE6xxxG0, DS-2XC6xxxG0, DS-2CD1xxxG0, DS-2CD1xx1, DS-2CD3xx1G0, DS-2CD2xx1G0, IPC-xxxxH and HWI-xxxH. It has been rated as critical. Impacted is an unknown function of the component Discovery Feature. This manipulation causes stack-based overflow. This vulnerability appears as CVE-2025-66177. The attacker needs to be present on the local network. There is no available exploit. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability classified as critical was found in Hikvision DS-96xxxNI-Hx, DS-96xxxNI-Ix, DS-96xxNXI-Sx, DS-96xxxNXI-Sx, DS-76xxNXI-Mx, VPro, DS-96xxNXI-Mx, DS-76xxNI-Mx, DS-77xxNI-Mx, DS-96xxxNXI-Mx, DS-86xxxNXI-Mx, DS-76xxNXI-Ix, S, DS-77xxNXI-Ix, DS-86xxNXI-Ix, DS-96xxNXI-Ix, DS-76xxNXI-Kx including 、、, DS-77xxNXI-Kx including 、、, DS-76xxNXI-Kx , Vpro, DS-77xxNXI-Kx , DS-76xxNI-Qx including 、, DS-71xxNI-Q1 , M, DS-71xxNI-Q1, DS-710xNI-G1, , DS-76xxNI-Q1, DS-76xxNI-Q2, DS-76xxNXI-K1, DS-76xxNXI-K2, DS-77xxNXI-K4, DS-86xxNXI-K8, DS-76xxNXI-K1 , DS-76xxNXI-K2 , DS-77xxNXI-K4 , iDS-71xxHGHI-M1, iDS-72xxHGHI-M1, iDS-71xxHQHI-M1, iDS-72xxHQHI-M1, iDS-72xxHQHI-Mx, XT, iDS-72xxHUHI-Mx, iDS-72xxHTHI-Mx, iDS-90xxHUHI-M8, iDS-73xxHUHI-M4, iDS-81xxHUHI-M8, DS-71xxHGHI-M1, DS-72xxHGHI-M1, DS-ExxHGHI-xx, E, T, iDS-73xxHQHI-M4, iDS-81xxHQHI-M8, iDS-90xxHQHI-M8, iDS-ExxHQHI-xx, iDS-71xxHUHI-M1, iDS-72xxHUHI-M1, X, PXT, iDS-ExxHUHI-xx, DS-A806xxSI, DS-AT1000SI, iDS-96xxxNXI-Hx, iDS-96064NXI-I16, iDS-96xxxNXI-Ix, AI, iDS-67xxNXI-Mx, iDS-76xxNXI-Mx, iDS-77xxNXI-Mx, iDS-96xxNXI-Mx, iDS-96xxxNXI-Mx, iDS-67xxxNXI-Mx, iDS-67xxNXI-S, iDS-6704NXI, iDS-67xxNXI-P1, iDS-7608NXI-P2, iDS-77xxNXI-P4, iDS-96xxNXI-Px, DS-2CD1xxxG2, DS-2CD3xx1G2, HWI-xxxxHA, IPC-xxxxHA, DS-2CD2Dx5G1, DS-2CD64x5G1, DS-2CD29xxG0, DS-2XE6xxxG0, DS-2XC6xxxG0, DS-2CD1xxxG0, DS-2CD1xx1, DS-2CD3xx1G0, DS-2CD2xx1G0, IPC-xxxxH and HWI-xxxH. Affected by this vulnerability is an unknown function of the component Discovery Feature. The manipulation with an unknown input leads to a stack-based overflow vulnerability. The CWE definition for the vulnerability is CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

There is a Stack overflow Vulnerability in the device Search and Discovery feature of Hikvision NVR/DVR/CVR/IPC models. 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.

The weakness was presented by Angel Lozano Alcazar and Pedro Guillen Nuñez. It is possible to read the advisory at hikvision.com. This vulnerability is known as CVE-2025-66177 since 11/24/2025. The exploitation appears to be easy. The attack needs to approached within the local network. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/13/2026).

Applying a patch is able to eliminate this problem.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Artificial Intelligence Software

Vendor

Hikvision

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.6

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.8
CNA Vector (hikvision): 🔒

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Timelineinfo

11/24/2025 CVE reserved
01/13/2026 +50 days Advisory disclosed
01/13/2026 +0 days VulDB entry created
01/13/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: hikvision.com
Researcher: Angel Lozano Alcazar, Pedro Guillen Nuñez
Status: Confirmed

CVE: CVE-2025-66177 (🔒)
GCVE (CVE): GCVE-0-2025-66177
GCVE (VulDB): GCVE-100-340543

Entryinfo

Created: 01/13/2026 08:40
Changes: 01/13/2026 08:40 (64)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

Discussion

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