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An issue was discovered in Samsung Mobile Processor, Wearable Processor and Modem Exynos 980, 990, 850, 1080, 9110, W920, W930, W1000 and Modem 5123. Incorrect handling of NAS Registration messages leads to a Denial of Service because of Improper Handling of Exceptional Conditions.

CVE-2025-59439 is a vulnerability discovered in several Samsung Exynos processors, including Mobile Processor, Wearable Processor, and Modem variants such as Exynos 980, 990, 850, 1080, 9110, W920, W930, W1000, and Modem 5123. The issue stems from incorrect handling of Non-Access Stratum (NAS) Registration messages, which are part of the cellular network protocol stack responsible for managing registration and mobility of devices on LTE/5G networks. Specifically, the processors improperly handle exceptional conditions triggered by malformed or unexpected NAS Registration messages, leading to a denial of service (DoS) condition. This DoS manifests as a crash or unresponsiveness of the affected processor component, resulting in loss of network connectivity or device functionality. The vulnerability does not compromise confidentiality or integrity but severely impacts availability. The CVSS v3.1 base score is 7.5, reflecting network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), unchanged scope (S:U), no confidentiality or integrity impact (C:N/I:N), and high availability impact (A:H). No patches or exploits are currently publicly available, but the broad range of affected processors indicates a wide attack surface across mobile phones, wearables, and IoT devices using these chips. The root cause aligns with CWE-400 (Uncontrolled Resource Consumption), where improper input handling leads to resource exhaustion or crash. This vulnerability could be exploited remotely by sending crafted NAS Registration messages over the cellular network, potentially disrupting device operation or network services.

Detailed information about CVE-2025-59439: n/a. Get real-time updates, technical details, and mitigation strategies.

CVE-2025-59439: n/a - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2025-59439: n/a

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