CVE-2020-13838

Notification exposure via DeX lock-screen bypass

Published Jun 4, 2020 · Updated Aug 4, 2024

Authentication bypass in Samsung mobile devices running Android 9.0 or 10.0 allows physically proximate attackers to view notifications. The DeX lock screen leaves the Quick Panel and notification interface accessible instead of enforcing device authentication. Physical access to a locked device with DeX active is required, exposing displayed notification content and Quick Panel controls without unlocking the device.

CVSS severity3.5
Low
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Samsung mobile devices running Android 9.0 or 10.0 allows physically proximate attackers to view notifications. The DeX lock screen leaves the Quick Panel and notification interface accessible instead of enforcing device authentication. Physical access to a locked device with DeX active is required, exposing displayed notification content and Quick Panel controls without unlocking the device.

The record

CVE
CVE-2020-13838
Published
Jun 4, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-306
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 4, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record 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 buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

3.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:N
3.5NIST NVDCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:L/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.

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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-306Missing Authentication for Critical Function

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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