EUVD-2026-42819
GHSA-7p8c-622m-54g7
Severity by source
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Local on-device trigger (AV:L) reachable by an already-privileged app (PR:L) with no user interaction; memory corruption yields high confidentiality/integrity and limited availability impact.
Primary rating from Vendor (samsung).
CVSS VectorVendor: samsung
Lifecycle Timeline
2DescriptionCVE.org
Out-of-bounds write in libpadm.so library prior to SMR Jul-2026 Release 1 allows local attackers to execute arbitrary code.
AnalysisAI
Arbitrary code execution in Samsung's libpadm.so system library on Galaxy devices allows a local, low-privileged attacker to corrupt memory via an out-of-bounds write and run code in the context of the vulnerable component prior to the SMR Jul-2026 Release 1. The flaw was reported internally by Samsung Mobile Security and carries a CVSS 4.0 base score of 8.4 (high). No public exploit identified at time of analysis and it is not listed in CISA KEV.
Technical ContextAI
libpadm.so is a proprietary native shared library shipped in Samsung's Android system image; native '.so' libraries execute unmanaged C/C++ code, so memory-safety errors translate directly into control over process memory. The root cause is an out-of-bounds write (CWE-787): the library writes past the bounds of an allocated buffer, allowing adjacent heap or stack structures, pointers, or return addresses to be overwritten. Because this is a device-resident library reached by local components rather than a network service, exploitation happens on-device. No CWE was supplied in the record, but the vendor tags (RCE, Buffer Overflow) and the 'out-of-bounds write' description align with CWE-787.
RemediationAI
Apply Samsung's Security Maintenance Release SMR Jul-2026 Release 1 or later via Settings > Software update on the device, or through the carrier/enterprise MDM update channel; this is the vendor-released patch that closes the out-of-bounds write. After updating, confirm the device reports a security patch level of July 2026 or newer. Consult the Samsung Mobile Security Bulletin at https://security.samsungmobile.com/securityUpdate.smsb?year=2026&month=07 for model-specific rollout timing. Until the SMR reaches a given model, reduce exposure by installing apps only from trusted sources (Galaxy Store / Google Play), avoiding sideloaded APKs that could invoke the vulnerable library, and enforcing Samsung Knox / MDM app-allowlisting on managed fleets; the trade-off is reduced app flexibility for users. There is no documented feature toggle to disable libpadm.so, so patching is the only complete fix.
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External POC / Exploit Code
Leaving vuln.today