CVE-2026-21009

Physical App Pinning bypass via Recents validation failure

Published Apr 13, 2026 · Updated Apr 13, 2026

Improper exception handling in Recents on Samsung Mobile Devices before SMR Apr-2026 Release 1 allows physical attackers to bypass App Pinning. The Recents component does not validate an exceptional condition and consequently fails to preserve the pinned-app boundary; Samsung has not disclosed the triggering input or code path. Physical access to a device with App Pinning active is required, and exploitation exposes applications and data that the feature was intended to restrict.

CVSS severity4.1
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper exception handling in Recents on Samsung Mobile Devices before SMR Apr-2026 Release 1 allows physical attackers to bypass App Pinning. The Recents component does not validate an exceptional condition and consequently fails to preserve the pinned-app boundary; Samsung has not disclosed the triggering input or code path. Physical access to a device with App Pinning active is required, and exploitation exposes applications and data that the feature was intended to restrict.

The record

CVE
CVE-2026-21009
Published
Apr 13, 2026
Updated
Apr 13, 2026
Vendor
Samsung Electronics Co., Ltd.
Product
Samsung Mobile Devices
Classifications
CWE-754
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 13, 2026Record 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 Mobile DevicesAffected versions are unavailable in this record.

Published CVSS scores

6.8NIST NVDCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
4.1Samsung MobileCVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-754Improper Check for Unusual or Exceptional Conditions

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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