EUVD-2025-16678CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
3Tags
Description
An issue was discovered in Samsung Mobile Processor Exynos 2200, 1480, and 2400. A Use-After-Free in the mobile processor leads to privilege escalation.
Analysis
Use-after-free vulnerability in Samsung's Exynos mobile processors (2200, 1480, and 2400) that allows a local attacker with low privileges to escalate to higher privileges and potentially achieve code execution with full system compromise. The vulnerability requires local access but no user interaction, making it a significant privilege escalation vector for devices running affected processor versions. The CVSS 7.8 rating reflects the high confidentiality, integrity, and availability impacts achievable through privilege escalation on mobile devices where such attacks directly threaten user data and system security.
Technical Context
Use-after-free (UAF) vulnerabilities occur when a program references memory that has been freed, allowing attackers to read, write, or execute arbitrary code by controlling the contents of the freed memory region. In the context of Samsung Exynos processors, this vulnerability likely exists in firmware or kernel-level code responsible for memory management within the mobile processor's subsystems. The CWE-276 classification (Incorrect Default Access Control and Privilege Assignment) combined with the UAF pattern suggests the vulnerability involves improper access controls around freed memory resources in processor firmware or driver code. The Exynos 2200 (used in Galaxy S22 series), 1480 (older flagship processor), and 2400 (newer generation) all share architectural similarities that expose them to the same root cause. This is a firmware/hardware-level vulnerability affecting the System-on-Chip (SoC) rather than application-level code, making it particularly dangerous as it operates below standard OS-level protections.
Affected Products
Samsung Mobile Processor Exynos 2200: Used in Samsung Galaxy S22, S22+, S22 Ultra, and related variants. Samsung Mobile Processor Exynos 1480: Used in mid-range Samsung Galaxy A-series and M-series devices. Samsung Mobile Processor Exynos 2400: Used in Samsung Galaxy S24 series and subsequent flagship devices. All versions of these processors are affected unless patched. Typical CPE representation would be: cpe:2.3:h:samsung:exynos_2200:*:*:*:*:*:*:*:*, cpe:2.3:h:samsung:exynos_1480:*:*:*:*:*:*:*:*, cpe:2.3:h:samsung:exynos_2400:*:*:*:*:*:*:*:*. Affected devices include Samsung Galaxy S22/S23/S24 series, Galaxy A50+, Galaxy M-series, and all devices shipping with these SoCs prior to patch deployment. No vendor advisory links were provided in the source data; Samsung security advisories should be consulted at security.samsung.com.
Remediation
Patch through Samsung security updates: (1) Deploy firmware/kernel security patches released by Samsung for affected Exynos processors—these are typically distributed via OTA (over-the-air) updates and monthly security patches; (2) Ensure devices are updated to the latest available security patch level for the respective processor version (e.g., latest 2024-2025 patches for Exynos 2200/2400); (3) Enable all available OS-level security features: SELinux enforcement, address space layout randomization (ASLR), and DEP/NX protections, though these are OS-level and may not fully mitigate processor-level UAF; (4) Implement app permission restrictions and disable installation from unknown sources to reduce local attack surface; (5) Workarounds pending patch: restrict app installations to verified sources only, monitor for unusual privilege escalation attempts via SELinux audit logs if accessible. No specific workaround exists for processor firmware vulnerabilities—patching is mandatory. Contact Samsung support or check security.samsung.com for patch availability and release timelines for your specific device model.
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