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CVE-2026-21103VulnerabilityPublished 09/09/2026Updated 09/10/2026

CVE-2026-21103: CWE-35: Path Traversal in Samsung Mobile Samsung Mobile Devices

Affects Samsung Mobile Samsung Mobile DevicesSource GCVE Database

0

Not known to be exploited · CVSS 6.8 Medium.

Data as of 10/25/2026, 04:40:11 UTC

CVSS 4.0 base score
6.8Medium
How severe the flaw is on the 0–10 CVSS scale.
Exploitation

Not in CISA KEV, no exploitation reported

EPSS
0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

What to do

AI-suggested

Until a fix is available, restricting physical access to devices is the primary mitigation.

Description

CVE-2026-21103 is a path traversal vulnerability in Samsung Mobile's GalaxyDiagnostics component prior to the SMR Sep-2026 Release 1. This flaw allows physical attackers to access files with system privileges on affected Samsung Mobile devices. The vulnerability has a CVSS 4.0 base score of 6.8, indicating medium severity. No specific affected versions or patch information is provided in the available data.

Impact

An attacker with physical access to a vulnerable Samsung Mobile device can exploit this path traversal vulnerability to access sensitive system files with elevated privileges. This could lead to unauthorized disclosure or modification of system data. The medium severity score reflects the requirement for physical access and the significant impact on confidentiality and integrity.

Weaknesses

  • CWE-35Path Traversal: '.../...//' (opens in a new tab)

    Variant weaknessOWASP Top 10 A01:2021: Broken Access Control (opens in a new tab)

    The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize '.../...//' (doubled triple dot slash) sequences that can resolve to a location that is outside of that directory.

References

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