CVE-2026-21003: CWE-20: Improper Input Validation in Samsung Mobile Samsung Mobile Devices
CVE-2026-21003 is a medium severity vulnerability in Samsung Mobile Devices involving improper input validation of data related to network restrictions. This flaw exists in device software versions prior to the SMR April 2026 Release 1. It allows physical attackers to bypass network restrictions by exploiting the improper validation. The vulnerability has a CVSS 4. 0 base score of 5. 2, indicating moderate impact. There is no official patch or remediation level currently confirmed from the vendor. No known exploits are reported in the wild at this time.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-21003) affects Samsung Mobile Devices and stems from improper input validation concerning network restriction data. The issue allows physical attackers to circumvent network restrictions on affected devices running software versions before the SMR April 2026 Release 1. The CVSS 4.0 vector indicates the attack requires physical access, has low attack complexity, no privileges or user interaction needed, and results in high impact on integrity and availability. No vendor advisory or patch information is currently available to confirm remediation status.
Potential Impact
Successful exploitation enables a physical attacker to bypass network restrictions on Samsung Mobile Devices, potentially compromising device integrity and availability. The impact is rated medium with a CVSS score of 5.2. There are no reports of active exploitation in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, physical security controls to prevent unauthorized access to devices are recommended. Monitor Samsung Mobile advisories for updates regarding patches or mitigations.
CVE-2026-21003: CWE-20: Improper Input Validation in Samsung Mobile Samsung Mobile Devices
Description
CVE-2026-21003 is a medium severity vulnerability in Samsung Mobile Devices involving improper input validation of data related to network restrictions. This flaw exists in device software versions prior to the SMR April 2026 Release 1. It allows physical attackers to bypass network restrictions by exploiting the improper validation. The vulnerability has a CVSS 4. 0 base score of 5. 2, indicating moderate impact. There is no official patch or remediation level currently confirmed from the vendor. No known exploits are reported in the wild at this time.
CVSS v4.0
Score 5.2medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-21003) affects Samsung Mobile Devices and stems from improper input validation concerning network restriction data. The issue allows physical attackers to circumvent network restrictions on affected devices running software versions before the SMR April 2026 Release 1. The CVSS 4.0 vector indicates the attack requires physical access, has low attack complexity, no privileges or user interaction needed, and results in high impact on integrity and availability. No vendor advisory or patch information is currently available to confirm remediation status.
Potential Impact
Successful exploitation enables a physical attacker to bypass network restrictions on Samsung Mobile Devices, potentially compromising device integrity and availability. The impact is rated medium with a CVSS score of 5.2. There are no reports of active exploitation in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, physical security controls to prevent unauthorized access to devices are recommended. Monitor Samsung Mobile advisories for updates regarding patches or mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- SamsungMobile
- Date Reserved
- 2025-12-11T01:33:35.802Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69dc7c4582d89c981f24c1bb
Added to database: 4/13/2026, 5:16:53 AM
Last enriched: 4/20/2026, 6:17:35 AM
Last updated: 5/28/2026, 10:41:36 PM
Views: 50
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