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AndroidOperating system · Samsung

CVE-2024-20881

MEDIUM · 6.7 CVSS v3.1 Published 2024-06-04
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
69/100
Remediation priority · Elevated
Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Improper input validation vulnerability in chnactiv TA prior to SMR Jun-2024 Release 1 allows local privileged attackers lead to potential arbitrary code execution.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

This is an improper input validation vulnerability in Samsung's chnactiv Trusted Application (TA) existing in versions prior to the SMR June-2024 security update. The flaw allows local privileged attackers to potentially achieve arbitrary code execution through the vulnerable TA component.

MitigationApply the Samsung SMR Jun-2024 Release 1 security patch or later, which contains the fix for this input validation vulnerability in the chnactiv TA.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
AndroidOperating system
Affected:= 12.0= 13.0

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Check Android version
    Go to Settings > About Phone > Android version, or run 'getprop ro.build.version.release' via ADB
    Affected if Version displays 12.0 or 13.0 (devices on 14.0 or later are not in the affected version range)
  2. Check Samsung security patch level
    Go to Settings > About Phone > Software information > Security patch level, or run 'getprop ro.build.version.security_patch' via ADB
    Affected if Patch level is earlier than June-2024 (SMR Jun-2024 Release 1) - this means the fix is not applied
  3. Confirm Samsung device
    Run 'getprop ro.product.model' or 'getprop ro.product.name' via ADB to verify this is a Samsung device
    Affected if Device is a Samsung product running the affected Android versions
  4. Verify chnactiv TA presence
    Check for the chnactiv Trusted Application in /vendor/lib/ or /system/lib/ directories, or review TEE (Trusted Execution Environment) logs if accessible
    Affected if chnactiv TA binary exists on the device - this is the vulnerable component that requires the fix

A Samsung Android device running version 12.0 or 13.0 with a security patch level before June-2024 is potentially affected by this improper input validation vulnerability in the chnactiv Trusted Application.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply the Samsung SMR Jun-2024 Release 1 security patch or later, which contains the fix for this input validation vulnerability in the chnactiv TA.

Recommended fix High confidence

SMR Jun-2024 Release 1 (June 2024 Samsung security update)

  1. Check your current Android version and Samsung security patch level in Settings > About Phone > Software Information
  2. Navigate to Settings > Software Update and check for available updates
  3. Download and install the SMR (Samsung Monthly Release) June 2024 or later security update
  4. After installation, verify the security patch level reflects June 2024 or later in Settings > About Phone > Software Information

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Android Scoped from the published advisory
  • Consultation2.0 h
  • Testing3.0 h
  • Review / QA1.0 h
6.0 hours of engineering $1,030
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-20881 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
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  • Version or environment caveats, and links to real fixes
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