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The vulnerability in Samsung Exynos processors (including Mobile, Wearable, and Modem variants) stems from improper length validation in the NAS (Network Attached Storage) component. Due to missing bounds checks, attackers can trigger out-of-bounds writes by sending crafted data packets to affected devices. This flaw allows arbitrary memory corruption, potentially leading to remote code execution or denial-of-service conditions. The issue affects multiple Exynos chipsets, including 980, 990, 2200, and Modem 5400, due to shared firmware architecture.
DailyCVE Form:
Platform: Samsung Exynos
Version: Multiple
Vulnerability: OOB Write
Severity: Critical
Date: 2025-05-19
Prediction: Patch by 2025-08-15
What Undercode Say:
adb shell dmesg | grep "exynos-nas" hexdump -C /proc/exynos_debug/nas_log
Exploit:
payload = b"\x41" 1024 send_nas_packet(target_ip, payload)
Protection from this CVE:
- Apply Samsung patches
- Disable NAS services
- Network segmentation
Impact:
- Remote code execution
- Device crash
- Privilege escalation
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
