EUVD-2026-74652
GHSA-x69q-4h23-g7jv
Severity by source
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/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 attack requiring low privileges (AV:L, PR:L); high confidentiality impact consistent with VC:H; limited integrity and availability from bounded OOB write; no scope change.
Primary rating from Vendor (SamsungMobile).
CVSS VectorVendor: SamsungMobile
Lifecycle Timeline
2DescriptionCVE.org
Out-of-bounds write in libsthmbc.so prior to One UI 8.5 allows local attackers to write out-of-bounds memory.
AnalysisAI
Out-of-bounds write in libsthmbc.so affects Samsung Mobile devices running One UI prior to version 8.5, allowing local low-privilege attackers to corrupt memory beyond allocated buffer boundaries. The CVSS 4.0 vector assigns high confidentiality impact (VC:H), indicating the write primitive can be leveraged to read or expose sensitive adjacent memory content. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Local code execution on a Samsung device running One UI prior to 8.5 is required. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 6.9 with vector AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N reflects a locally-exploitable memory corruption flaw with high confidentiality impact but limited integrity and availability consequences. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the Samsung One UI 8.5 security update, which contains the patched version of libsthmbc.so. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-787 – Out-of-bounds Write
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External POC / Exploit Code
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