CVE-2026-21018: CWE-787 Out-of-bounds Write in Samsung Mobile Samsung Mobile Devices
CVE-2026-21018 is an out-of-bounds write vulnerability in the SveService component of Samsung Mobile Devices prior to the SMR May-2026 Release 1. This flaw allows local attackers with privileged access to execute arbitrary code. The vulnerability has a CVSS 4.0 base score of 6.8, indicating a medium severity level. No official patch or remediation guidance has been provided yet by the vendor. There are no known exploits in the wild at this time.
AI Analysis
Technical Summary
This vulnerability involves an out-of-bounds write (CWE-787) in the SveService on Samsung Mobile Devices before the May 2026 security maintenance release (SMR). It requires local privileged attacker access and does not require user interaction. The CVSS 4.0 vector indicates low attack complexity and no user interaction, but the attacker must have high privileges. The vulnerability can lead to arbitrary code execution, impacting confidentiality, integrity, and availability. No patch or official remediation level has been disclosed by Samsung Mobile as of the publication date.
Potential Impact
Successful exploitation allows a local privileged attacker to execute arbitrary code on affected Samsung Mobile Devices. This can compromise system integrity and potentially lead to further system control or data compromise. The vulnerability does not appear to be exploitable remotely and requires elevated privileges, limiting the attack surface.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict local privileged access to trusted users only. Monitor Samsung Mobile security advisories for updates and apply the SMR May-2026 Release 1 or later once available.
CVE-2026-21018: CWE-787 Out-of-bounds Write in Samsung Mobile Samsung Mobile Devices
Description
CVE-2026-21018 is an out-of-bounds write vulnerability in the SveService component of Samsung Mobile Devices prior to the SMR May-2026 Release 1. This flaw allows local attackers with privileged access to execute arbitrary code. The vulnerability has a CVSS 4.0 base score of 6.8, indicating a medium severity level. No official patch or remediation guidance has been provided yet by the vendor. There are no known exploits in the wild at this time.
CVSS v4.0
Score 6.8medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves an out-of-bounds write (CWE-787) in the SveService on Samsung Mobile Devices before the May 2026 security maintenance release (SMR). It requires local privileged attacker access and does not require user interaction. The CVSS 4.0 vector indicates low attack complexity and no user interaction, but the attacker must have high privileges. The vulnerability can lead to arbitrary code execution, impacting confidentiality, integrity, and availability. No patch or official remediation level has been disclosed by Samsung Mobile as of the publication date.
Potential Impact
Successful exploitation allows a local privileged attacker to execute arbitrary code on affected Samsung Mobile Devices. This can compromise system integrity and potentially lead to further system control or data compromise. The vulnerability does not appear to be exploitable remotely and requires elevated privileges, limiting the attack surface.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict local privileged access to trusted users only. Monitor Samsung Mobile security advisories for updates and apply the SMR May-2026 Release 1 or later once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- SamsungMobile
- Date Reserved
- 2025-12-11T01:33:35.804Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a0414eecbff5d86106d956e
Added to database: 05/13/2026, 06:06:38 UTC
Last enriched: 05/20/2026, 18:53:18 UTC
Last updated: 07/31/2026, 19:22:57 UTC
Views: 51
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