An issue was discovered in Samsung Mobile Processor, Wearable Processor, and Modem Exynos 980, 990, 850, 1080, 2100, 1280, 2200, 1330, 1380, 1480, 2400, 1580, 2500, 9110, W920, W930, W1000, Modem 5123, Modem 5300, and Modem 5400. An out-of-bounds write occurs due to a mismatch between the TP-UDHI and UDL values when processing an SMS TP-UD packet.
The vulnerability occurs during the processing of SMS TP-UD (User Data) packets. There is a mismatch between the values of the TP-UDHI (User Data Header Indicator) and UDL (User Data Length) fields, leading to a write outside the allocated buffer boundaries (out-of-bounds write). An attacker can send a specially crafted SMS message that triggers this error without any user interaction or prior authentication.
An attacker can gain full control over the vulnerable device, including the ability to read and modify data and disrupt system operation (loss of confidentiality, integrity, and availability). Due to the network vector and lack of prerequisites, the vulnerability can be exploited for remote code execution (RCE).
Patches available from the manufacturer should be applied according to references — security updates published by Samsung Semiconductor at https://semiconductor.samsung.com/support/quality-support/product-security-updates/cve-2025-62818/
Samsung Mobile Processor, Wearable Processor and Modem: Exynos 980, 990, 850, 1080, 2100, 1280, 2200, 1330, 1380, 1480, 2400, 1580, 2500, 9110, W920, W930, W1000, Modem 5123, Modem 5300, Modem 5400
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSamsung Exynos 1080
HWSamsungwszystkie wersjeSamsung Exynos 1080 Firmware
OSSamsungwszystkie wersjeSamsung Exynos 1280
HWSamsungwszystkie wersjeSamsung Exynos 1280 Firmware
OSSamsungwszystkie wersjeSamsung Exynos 1330
HWSamsungwszystkie wersjeSamsung Exynos 1330 Firmware
OSSamsungwszystkie wersjeSamsung Exynos 1380
HWSamsungwszystkie wersjeSamsung Exynos 1380 Firmware
OSSamsungwszystkie wersjeSamsung Exynos 1480
HWSamsungwszystkie wersjeSamsung Exynos 1480 Firmware
OSSamsungwszystkie wersjeSamsung Exynos 1580
HWSamsungwszystkie wersjeSamsung Exynos 1580 Firmware
OSSamsungwszystkie wersjeSamsung Exynos 2100
HWSamsungwszystkie wersjeSamsung Exynos 2100 Firmware
OSSamsungwszystkie wersjeSamsung Exynos 2200
HWSamsungwszystkie wersjeSamsung Exynos 2200 Firmware
OSSamsungwszystkie wersjeSamsung Exynos 2400
HWSamsungwszystkie wersjeSamsung Exynos 2400 Firmware
OSSamsungwszystkie wersjeSamsung Exynos 2500
HWSamsungwszystkie wersjeSamsung Exynos 2500 Firmware
OSSamsungwszystkie wersjeSamsung Exynos 850
HWSamsungwszystkie wersjeSamsung Exynos 850 Firmware
OSSamsungwszystkie wersjeSamsung Exynos 9110
HWSamsungwszystkie wersjeSamsung Exynos 9110 Firmware
OSSamsungwszystkie wersjeSamsung Exynos 980
HWSamsungwszystkie wersjeSamsung Exynos 980 Firmware
OSSamsungwszystkie wersjeSamsung Exynos 990
HWSamsungwszystkie wersjeSamsung Exynos 990 Firmware
OSSamsungwszystkie wersjeSamsung Exynos Modem 5123
HWSamsungwszystkie wersjeSamsung Exynos Modem 5123 Firmware
OSSamsungwszystkie wersje
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