CVE-2025-61619 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-2025-61619 affects the nr modem component where inadequate input validation mechanisms exist, creating a potential system crash scenario. This flaw resides within the modem's processing logic where external inputs are not properly sanitized or verified before being consumed by the system's core operations. The vulnerability represents a classic example of insufficient validation that can be exploited to trigger unintended system behavior. According to CWE classification, this corresponds to CWE-20: Improper Input Validation, which is a fundamental weakness that allows malicious actors to inject malformed data that can cause system instability. The vulnerability's impact is particularly concerning as it enables remote denial of service attacks without requiring any elevated privileges or execution rights from the attacker.
The technical implementation of this vulnerability stems from the modem's failure to properly validate incoming data streams or configuration parameters. When malformed input reaches the modem's processing units, the system does not adequately handle these unexpected values, leading to potential memory corruption, stack overflow conditions, or other destabilizing behaviors that ultimately result in system crash or complete service disruption. The attack surface is broad as the modem component typically interfaces with various network protocols and communication channels, making it accessible through multiple vectors. From an operational perspective, this vulnerability aligns with ATT&CK technique T1499.004: Endpoint Denial of Service, where adversaries can leverage system weaknesses to render services unavailable to legitimate users.
The remote exploitation capability of this vulnerability means that attackers can trigger the denial of service condition from external network positions without requiring physical access or authentication credentials. This characteristic significantly amplifies the threat potential and makes the vulnerability particularly attractive to malicious actors seeking to disrupt network services or communication infrastructure. The lack of privilege requirements for exploitation further reduces the barrier to successful attack, as no additional malicious activities are needed beyond sending the crafted input to the vulnerable modem component. The impact extends beyond simple service interruption as modem failures can affect entire network communication pathways, potentially causing cascading failures in connected systems.
Organizations should prioritize immediate remediation efforts including firmware updates from the vendor, network segmentation to limit exposure, and implementation of input validation controls at network boundaries. The vulnerability demonstrates the critical importance of robust input validation practices throughout system design and implementation phases, as highlighted in industry standards such as NIST SP 800-160 and ISO/IEC 27001. Additionally, monitoring systems should be enhanced to detect anomalous input patterns that may indicate exploitation attempts, while incident response procedures should include specific protocols for modem-related service disruptions. Regular security assessments and penetration testing of network infrastructure components can help identify similar validation weaknesses that may exist in other system components, ensuring comprehensive protection against similar vulnerabilities.