CVE-2025-43706
Published: 05 January 2026
Summary
CVE-2025-43706 is a high-severity Uncontrolled Resource Consumption (CWE-400) vulnerability in Samsung Exynos 1080 Firmware. Its CVSS base score is 7.5 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Application or System Exploitation (T1499.004); ranked at the 35.0th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Limiting concurrent sessions directly prevents uncontrolled resource consumption by capping the number of active sessions per user or account.
Analysis identifies uncontrolled resource consumption indicative of denial-of-service or abuse attempts.
Contingency plan testing includes resource exhaustion scenarios to verify recovery, making it harder for attackers to sustain exploits that cause uncontrolled consumption.
Updated contingency plans include current procedures to detect, contain, and recover from resource exhaustion, limiting an attacker's ability to sustain impact from uncontrolled consumption.
Alternate site allows resumption of operations if resource exhaustion at the primary site is exploited to cause unavailability.
Alternate telecommunications services enable resumption of essential functions when primary services become unavailable due to uncontrolled resource consumption.
The team can analyze and respond to resource exhaustion incidents, reducing the impact of attacks that exploit uncontrolled consumption weaknesses.
Timely maintenance support and spare parts enable rapid recovery from failures induced by uncontrolled resource consumption, shortening the impact window of denial-of-service attacks.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Malformed RRC packet handling triggers remote DoS via system exploitation on affected endpoints.
NVD Description
An issue was discovered in L2 in Samsung Mobile Processor, Wearable Processor, and Modem Exynos 980, 990, 850, 1080, 2400, 1580, 9110, W920, W930, Modem 5123, and Modem 5400. Incorrect handling of RRC packets leads to a Denial of Service.
Deeper analysisAI
CVE-2025-43706 is a vulnerability discovered in the L2 layer of Samsung Mobile Processor, Wearable Processor, and Modem components, specifically affecting Exynos models 980, 990, 850, 1080, 2400, 1580, 9110, W920, W930, Modem 5123, and Modem 5400. The flaw arises from incorrect handling of RRC packets, leading to a denial of service condition. It carries a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) and is classified under CWE-400 (Uncontrolled Resource Consumption). The CVE was published on 2026-01-05.
Attackers can exploit this vulnerability remotely over the network with low attack complexity, requiring no privileges, authentication, or user interaction. By sending malformed RRC packets to an affected device, an unauthenticated remote attacker can trigger a denial of service, disrupting the target's availability while having no impact on confidentiality or integrity.
Samsung Semiconductor provides details and mitigation through its product security updates on the support pages at https://semiconductor.samsung.com/support/quality-support/product-security-updates/ and https://semiconductor.samsung.com/support/quality-support/product-security-updates/cve-2025-43706/.
Details
- CWE(s)