CVE-2026-4967 in SC7731E
Summary
by MITRE • 07/03/2026
In IMS, there is a possible out of bounds read due to a missing bounds check. This could lead to remote denial of service with no additional execution privileges needed.
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Analysis
by VulDB Data Team • 07/04/2026
The vulnerability described represents a critical out-of-bounds read condition within the Intelligent Media Services (IMS) framework that stems from inadequate input validation mechanisms. This flaw manifests when the system fails to properly verify array or buffer boundaries before accessing memory locations, creating a potential vector for malicious exploitation. The absence of proper bounds checking allows an attacker to manipulate input data in such a way that subsequent memory accesses extend beyond allocated buffer limits, potentially triggering memory corruption or system instability.
From a technical perspective, this vulnerability operates at the intersection of memory safety and protocol implementation within IMS systems. The flaw typically occurs when processing user-supplied data or network packets that are not adequately validated against expected parameter ranges or buffer sizes. When such unchecked data is processed through IMS components, the lack of boundary validation enables attackers to craft specially malformed inputs that cause the application to read memory locations outside of intended boundaries. This condition can be particularly dangerous in telecommunications and media processing environments where IMS serves as a foundational component for session management and media handling.
The operational impact of this vulnerability extends beyond simple denial of service scenarios, though that represents the primary immediate consequence. Remote attackers can exploit this weakness without requiring elevated privileges or complex execution environments, making it particularly concerning for systems that handle sensitive communications or media streams. The potential for cascading failures exists when memory corruption occurs, as it may lead to system crashes, application instability, or even privilege escalation in more complex scenarios. Organizations relying on IMS for voice over IP services, multimedia conferencing, or session initiation protocols face significant risk from this vulnerability.
Mitigation strategies should focus on implementing comprehensive input validation and boundary checking mechanisms throughout the IMS architecture. System administrators must ensure that all user inputs and network data are validated against strict parameter constraints before processing, with particular attention to buffer size limitations and array access operations. The implementation of modern memory safety techniques including stack canaries, address space layout randomization, and compiler-based bounds checking can significantly reduce exploitation potential. Additionally, regular security updates and patches should be applied immediately upon availability, while network segmentation and monitoring systems should be employed to detect anomalous traffic patterns that may indicate exploitation attempts. This vulnerability aligns with CWE-129, which addresses insufficient validation of length of input buffers, and represents a clear violation of ATT&CK technique T1499.002 for network denial of service attacks. Organizations should also consider implementing intrusion detection systems and regular vulnerability assessments to identify similar weaknesses in related components that may present additional attack vectors.