Remote code execution via ImsService out-of-bounds write
Published Jul 28, 2026 · Updated Jul 28, 2026
Out-of-bounds write in ImsService on Samsung Mobile Devices running Android 14 through 16 allows remote attackers to execute arbitrary code. ImsService processes remotely supplied data without sufficient validation and writes beyond an intended buffer; Samsung has not disclosed the input or code path. No authentication or user interaction is required, but exploitation depends on an unspecified attack requirement and can corrupt device memory to execute code.
Summary
What happened
Out-of-bounds write in ImsService on Samsung Mobile Devices running Android 14 through 16 allows remote attackers to execute arbitrary code. ImsService processes remotely supplied data without sufficient validation and writes beyond an intended buffer; Samsung has not disclosed the input or code path. No authentication or user interaction is required, but exploitation depends on an unspecified attack requirement and can corrupt device memory to execute code.
The record
- CVE
- CVE-2026-21047
- Published
- Jul 28, 2026
- Updated
- Jul 28, 2026
- Vendor
- Samsung Electronics Co., Ltd.
- Product
- Samsung Mobile Devices
- Classifications
- CWE-787, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 28, 2026CVE publishedPublication date reported by the CVE source.
- Jul 28, 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?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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