CVE-2025-21035

Physical cross-profile data disclosure

Published Sep 3, 2025 · Updated Sep 3, 2025

Improper access control in Samsung Calendar allows physically proximate attackers to read data across Android user profiles. Samsung states only that Calendar lacks proper access control and has not identified the affected component or operation. Physical possession of a device running Calendar before 12.5.06.5 on Android 14 or before 12.6.01.12 on Android 15 is required, and the impact is disclosure only.

CVSS severity4.6
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Samsung Calendar allows physically proximate attackers to read data across Android user profiles. Samsung states only that Calendar lacks proper access control and has not identified the affected component or operation. Physical possession of a device running Calendar before 12.5.06.5 on Android 14 or before 12.6.01.12 on Android 15 is required, and the impact is disclosure only.

The record

CVE
CVE-2025-21035
Published
Sep 3, 2025
Updated
Sep 3, 2025
Vendor
Samsung Electronics Co., Ltd.
Product
Samsung Calendar
Classifications
CWE-284, T1005
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 3, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Samsung Electronics Co., Ltd. · Samsung CalendarAffected versions are unavailable in this record.

Published CVSS scores

4.6Samsung MobileCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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