EUVD-2026-42813
GHSA-gv8c-gvfm-mqvp
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 vector and low-privileged foothold required (AV:L/PR:L), no user interaction; OOB write yields high confidentiality/integrity impact with limited availability effect and no scope change.
Primary rating from Vendor (samsung).
CVSS VectorVendor: samsung
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
Lifecycle Timeline
1DescriptionCVE.org
Out-of-bounds write in libsavsac.so prior to SMR Jul-2026 Release 1 allows local attackers to execute arbitrary code.
AnalysisAI
Local privilege-escalating code execution in Samsung's libsavsac.so native library (used in Galaxy devices running firmware prior to the SMR Jul-2026 Release 1) allows a low-privileged local attacker to trigger an out-of-bounds write and execute arbitrary code in the context of the affected component. The flaw was reported by Samsung's own Mobile Security team and carries a CVSS 4.0 base score of 8.4 (High). …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to already have local, low-privileged code execution on the target Samsung device (CVSS PR:L, AV:L) - for example a malicious or compromised app running on the handset - and to reach the vulnerable code path within libsavsac.so; no user interaction is required (UI:N). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The Samsung-assigned CVSS 4.0 vector (AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L) describes a locally exploitable flaw: the attacker must already have code execution on the device with low privileges (PR:L), needs no user interaction (UI:N), and low attack complexity (AC:L). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | A malicious or compromised low-privileged app already installed on a Galaxy device invokes the code path in libsavsac.so with crafted input, triggering the out-of-bounds write to corrupt memory and execute attacker-controlled code within the library's process context. This could be chained with other flaws to escalate privileges or access data the app should not reach. … |
| Remediation | Apply the Samsung security maintenance release: update affected Galaxy devices to SMR Jul-2026 Release 1 or later, which contains the fix for the libsavsac.so out-of-bounds write (Vendor-released patch: SMR Jul-2026 Release 1). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Audit your environment to identify all Samsung Galaxy devices and confirm which are running pre-SMR Jul-2026 Release 1 firmware. …
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Same technique Buffer Overflow
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External POC / Exploit Code
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