EUVD-2025-209268
GHSA-6279-562x-78g7
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
3DescriptionCVE.org
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.
AnalysisAI
Out-of-bounds write in Samsung Exynos chipsets (processors 980/990/850/1080/2100/1280/2200/1330/1380/1480/2400/1580/2500/9110, wearables W920/W930/W1000, modems 5123/5300/5400) allows unauthenticated remote attackers to achieve arbitrary code execution via malformed SMS TP-UD packets. Exploitation occurs through TP-UDHI/UDL value mismatch during SMS message parsing, enabling network-level attacks without user interaction. No public exploit identified at time of analysis.
Technical ContextAI
Buffer overflow (CWE-787) in SMS Transfer Protocol User Data (TP-UD) parser. Mismatch between User Data Header Indicator (TP-UDHI) flag and User Data Length (UDL) field triggers memory corruption during baseband modem processing. Attack surface exposed through standard cellular SMS delivery mechanisms requiring no physical device access.
RemediationAI
Vendor-released security update available through Samsung Semiconductor product security updates portal. Device manufacturers using affected Exynos chipsets must integrate Samsung's firmware patches into end-user device updates. End users should apply latest security patches from device OEMs (smartphone/wearable manufacturers). No user-side workaround exists as vulnerability resides in baseband firmware. Organizations should monitor device manufacturer security bulletins for deployment timelines. Complete vendor advisory at https://semiconductor.samsung.com/support/quality-support/product-security-updates/cve-2025-62818/ and general update portal at https://semiconductor.samsung.com/support/quality-support/product-security-updates/. EPSS indicates low observed exploitation activity.
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Same weakness CWE-787 – Out-of-bounds Write
View allSame technique Buffer Overflow
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External POC / Exploit Code
Leaving vuln.today