Local privilege escalation via persistent connection-service permission
Published Sep 2, 2025 · Updated Feb 26, 2026
Improper permission handling in Android 13 through 15 allows local users to retain a permission through a telecom service binding. ConnectionServiceWrapper fails to unbind a ConnectionService when no call or conference is created, allowing a malicious app to keep a declared permission indefinitely in the background. Exploitation requires user interaction and low local privileges; the retained permission enables privilege escalation affecting device data and operation.
Summary
What happened
Improper permission handling in Android 13 through 15 allows local users to retain a permission through a telecom service binding. ConnectionServiceWrapper fails to unbind a ConnectionService when no call or conference is created, allowing a malicious app to keep a declared permission indefinitely in the background. Exploitation requires user interaction and low local privileges; the retained permission enables privilege escalation affecting device data and operation.
The record
- CVE
- CVE-2024-40653
- Published
- Sep 2, 2025
- Updated
- Feb 26, 2026
- Vendor
- Google Cloud
- Product
- Android
- Classifications
- CWE-287, T1404
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 2, 2025CVE publishedPublication date reported by the CVE source.
- Feb 26, 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?
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- Affected versionversion=13
- Affected versionversion=14
- Affected versionversion=15
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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