CVE-2025-61608 in T8100
Summary
by MITRE • 12/01/2025
In nr modem, there is a possible system crash due to improper input validation. This could lead to remote denial of service with no additional execution privileges needed
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Analysis
by VulDB Data Team • 12/21/2025
The vulnerability identified as CVE-2025-61608 resides within the nr modem component, representing a critical weakness in input validation mechanisms that can result in system instability. This flaw manifests as a potential for remote denial of service attacks, where adversaries can trigger system crashes without requiring any elevated execution privileges or specialized access rights. The vulnerability specifically targets the modem's handling of malformed or unexpected input data, creating a pathway for attackers to disrupt normal system operations from remote locations.
The technical nature of this vulnerability aligns with CWE-20, which describes improper input validation as a fundamental weakness in software design. When the nr modem receives input that does not conform to expected parameters or formats, the system fails to properly validate or sanitize this data before processing. This lack of robust input validation creates opportunities for attackers to craft malicious payloads that exploit the modem's failure to handle unexpected data gracefully. The vulnerability's remote exploitability suggests that the input validation occurs at network-facing interfaces where external connections are accepted, making the system accessible to attackers without local access requirements.
From an operational perspective, this vulnerability presents a significant risk to network infrastructure and service availability. The ability to achieve remote denial of service without additional privileges means that even low-skilled attackers can potentially disrupt modem operations, leading to service interruptions, connectivity failures, and potential cascading effects on dependent systems. The impact extends beyond simple service disruption as modem failures can affect broader network communications, particularly in environments where these modems serve as critical connectivity points for remote access or cellular network operations.
The attack surface for this vulnerability encompasses any system running the affected nr modem software that accepts network input. This includes mobile network infrastructure, IoT devices with modem capabilities, and any embedded systems that utilize similar modem implementations. The lack of privilege requirements for exploitation makes this particularly concerning as it removes barriers that would normally limit the scope of potential attackers. Security practitioners should consider this vulnerability as part of their broader threat modeling efforts, particularly when assessing the resilience of network infrastructure components against remote exploitation attempts.
Mitigation strategies should focus on implementing robust input validation controls within the modem's processing pipeline, including proper sanitization of all incoming data before further processing. Organizations should prioritize applying vendor patches or updates as soon as they become available, while also implementing network segmentation and monitoring to detect potential exploitation attempts. The vulnerability's classification as a remote denial of service threat aligns with ATT&CK technique T1499.004, which covers network denial of service attacks. Additionally, implementing proper error handling and graceful degradation mechanisms can help minimize the impact of exploitation attempts, while network-level controls such as firewalls and intrusion detection systems can provide additional layers of protection against unauthorized access attempts targeting these vulnerable components.