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Samsung Dialer CVE-2026-21061

| EUVDEUVD-2026-55086 MEDIUM
Improper Input Validation (CWE-20)
2026-08-10 SamsungMobile GHSA-chqx-m383-qf48
Information Disclosure Samsung Samsung Mobile Devices
6.0
CVSS 4.0 · Vendor: SamsungMobile
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Severity by source

Vendor (SamsungMobile) PRIMARY
6.0 MEDIUM
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/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
vuln.today AI
5.3 MEDIUM

Network-reachable with mandatory user interaction (UI:R) and high complexity; strictly confidentiality impact (C:H) as SIM data is exposed with no integrity or availability effect.

3.1 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
4.0 AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (SamsungMobile).

CVSS VectorVendor: SamsungMobile

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
P
Scope
X

Lifecycle Timeline

2
Analysis Generated
Aug 10, 2026 - 08:03 vuln.today
CVE Published
Aug 10, 2026 - 07:40 cve.org
MEDIUM 6.0

DescriptionCVE.org

Improper input validation in Samsung Dialer prior to SMR Aug-2026 Release 1 allows remote attackers to access SIM related functions. User interaction is required for triggering this vulnerability.

AnalysisAI

Samsung Dialer on Samsung Mobile Devices prior to SMR Aug-2026 Release 1 exposes SIM-related functions to remote attackers through improper input validation, requiring user interaction to trigger. The CVSS 4.0 vector (AV:N/AC:H/AT:P/PR:N/UI:P/VC:H) classifies this as a network-reachable, high-confidentiality-impact flaw, though high attack complexity and specific prerequisites substantially reduce the realistic threat surface. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Vulnerability AssessmentAI

Exploitation User interaction is explicitly required - the target must interact with attacker-controlled content within the Samsung Dialer application; passive delivery alone is insufficient to trigger exploitation. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 6.0 reflects a genuine but bounded risk. … 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 Samsung Mobile Security Maintenance Release (SMR) Aug-2026 Release 1 or later, distributed through the standard Samsung over-the-air update mechanism (Settings > Software Update > Download and Install). … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-21061 vulnerability details – vuln.today
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