How to fix CVE-2025-7503?

Within 24 hours: Identify and isolate all affected Liandian IP cameras (AppFHE1_V1.0.6.0 firmware) from production networks; disable Telnet access at the firewall/network level if isolation is not immediately feasible. Within 7 days: Complete audit of all camera deployments, document business justification for any devices that must remain online, and implement network segmentation with restricted access controls. Within 30 days: Evaluate vendor replacement options or scheduled decommissioning; implement mandatory egress filtering on camera subnets and deploy network monitoring to detect unauthorized Telnet connections.

Is IoT affected by CVE-2025-7503?

Our organization faces critical risk from OEM IP cameras with exposed default credentials enabling unauthorized root-level access. Any camera on our network can be remotely compromised to conduct surveillance, launch lateral attacks, or serve as a pivot point into core systems.

CVE-2025-7503

EUVD-2025-21182 CRITICAL

2025-07-11 1c6b5737-9389-4011-8117-89fa251edfb2

10.0

CVSS 4.0

CVSS Vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/U:Red

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Lifecycle Timeline

Analysis Generated

Mar 16, 2026 - 08:18 vuln.today

EUVD ID Assigned

Mar 16, 2026 - 08:18 euvd

EUVD-2025-21182

CVE Published

Jul 11, 2025 - 19:15 nvd

CRITICAL 10.0

Description

An OEM IP camera manufactured by Shenzhen Liandian Communication Technology LTD exposes a Telnet service (port 23) with undocumented, default credentials. The Telnet service is enabled by default and is not disclosed or configurable via the device’s web interface or user manual. An attacker with network access can authenticate using default credentials and gain root-level shell access to the device. The affected firmware version is AppFHE1_V1.0.6.0 (Kernel: KerFHE1_PTZ_WIFI_V3.1.1, Hardware: HwFHE1_WF6_PTZ_WIFI_20201218). No official fix or firmware update is available, and the vendor could not be contacted. This vulnerability allows for remote code execution and privilege escalation.

Analysis

CVE-2025-7503 is a security vulnerability (CVSS 10.0). Critical severity with potential for significant impact on affected systems.

Technical Context

CWE-798 (Hard-coded Credentials). CVSS 10.0 indicates critical severity with likely remote exploitation vector.

Affected Products

['Unspecified product']

Remediation

Monitor vendor channels for patch availability.

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +0.7

CVSS: +50

POC: 0

CVE-2025-7503 vulnerability details – vuln.today

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CVE-2025-7503

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CVE-2025-7503

CVSS Vector

Lifecycle Timeline

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Description

Analysis

Technical Context

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External POC / Exploit Code