CVE-2025-1616: Medium Vulnerability in FiberHome AN5506-01A ONU GPON RP2511

A vulnerability, which was classified as critical, has been found in FiberHome AN5506-01A ONU GPON RP2511. Affected by this issue is some unknown functionality of the component Diagnosis. The manipulation of the argument Destination Address leads to OS command injection. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

With a CVSS score of 5.1, this vulnerability is classified as medium severity. Organizations should prioritize patching to mitigate the risk posed by remote exploitation. The potential for unauthorized access highlights the need for immediate attention.

Risk to organizations includes exploitation of the vulnerability by attackers, which could lead to significant security breaches. The public disclosure of the exploit makes this a pressing concern for affected systems.

Organizations should prioritize patching immediately.

Vulnerability Details

The vulnerability affects the FiberHome AN5506-01A ONU GPON RP2511, specifically its Diagnosis component. The manipulation of the Destination Address argument can lead to OS command injection. This vulnerability was published on February 24, 2025. Its CVSS score is 5.1, indicating a medium severity level.

The CVE entry is classified under CWE-77 and CWE-78, indicating command injection and OS command injection weaknesses. Organizations are advised to remain vigilant.

Technical Analysis

The attack vector for this vulnerability is network-based, with a low attack complexity. It requires high privileges but does not require user interaction. The impact on confidentiality, integrity, and availability is classified as low.

Risk & Impact Analysis

Real-world deployment risk is significant, given that the vulnerability allows for remote exploitation. Organizations using affected FiberHome devices should assess their exposure to this risk and prioritize remediation.

The urgency for organizations to act is underscored by the potential for significant impact. As this vulnerability is publicly disclosed, the likelihood of exploitation increases, necessitating prompt action.

In terms of CVSS and KEV, organizations should be aware of the exploitation status and adjust their patch management priorities accordingly.

Exploitation Status

Affected Versions

The affected version is the FiberHome AN5506-01A firmware version RP2511. All versions prior to vendor patch are vulnerable.

Mitigation & Remediation

Organizations should apply any available patches for the affected FiberHome firmware immediately. In the absence of a patch, consider implementing network segmentation to limit exposure and monitoring for suspicious activities. Regular penetration testing can aid in identifying similar vulnerabilities.

For further guidance on conducting effective security assessments, refer to the penetration testing services offered.

Detection Guidance

Monitor logs for unusual command execution patterns and unauthorized access attempts. Behavior anomalies may indicate exploitation attempts. Additionally, ensure network signatures are up to date to detect potential attack patterns.

AppSecure Threat Intelligence Insight

The long-term significance of this vulnerability lies in its ability to facilitate remote command execution, which can lead to severe breaches in security. Organizations must focus on understanding the patterns of such vulnerabilities to enhance their security posture.

For further reading on security testing best practices, see the security testing best practices guide.

Furthermore, organizations should consider implementing a robust vulnerability management program to proactively address similar vulnerabilities in the future.

Lastly, continuous engagement in penetration testing methodologies will help teams stay ahead of emerging threats.