CVE-2025-7503
Published: 11 July 2025
Summary
CVE-2025-7503 is a critical-severity Use of Hard-coded Credentials (CWE-798) vulnerability. Its CVSS base score is 10.0 (Critical).
Operationally, ranked in the top 15.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
The vulnerability in CVE-2025-7503 is the presence of an undocumented Telnet service on port 23 that uses hardcoded default credentials on OEM IP cameras manufactured by Shenzhen Liandian Communication Technology LTD. The affected component is the firmware version AppFHE1_V1.0.6.0 with kernel KerFHE1_PTZ_WIFI_V3.1.1 and hardware HwFHE1_WF6_PTZ_WIFI_20201218; the service is enabled by default and cannot be discovered or disabled through the web interface or user manual. This corresponds to CWE-798 for use of hard-coded credentials and carries a CVSS 4.0 score of 10.0.
An attacker with network access to the device can connect to the Telnet listener, authenticate with the default credentials, and obtain an unauthenticated root shell. This grants the ability to execute arbitrary code, escalate privileges, and fully compromise the camera without any user interaction or prior authentication.
The sole reference, a GitHub research report on V380-series cameras, states that no official firmware update or mitigation is available because the vendor could not be contacted and the Telnet interface is not exposed in any documented configuration path.
The EPSS score remains flat at a peak and current value of 0.0222 with no material increase after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-21182
Vulnerability details
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…
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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.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Enables users to notice when hard-coded credentials have been exploited for unauthorized access.
Security training explicitly warns against hard-coded credentials, lowering their use in systems.
Policy and procedures prohibit hard-coded credentials in favor of managed authentication.
External identity providers eliminate the need for hard-coded credentials in applications.
Changing default authenticators prior to first use and protecting content prevents use of hard-coded credentials.
Central credential stores and rotation policies remove the need for hard-coded credentials in configuration files or code.
Intelligence programs surface reports of campaigns that abuse hard-coded credentials in products, prompting removal or replacement and thereby reducing successful exploitation.
Planned investment enables secure credential storage and management systems instead of hard-coded credentials.