CVE-2021-25489 Samsung CVE debrief

Who should care

Samsung mobile device administrators, enterprise mobility teams, managed service providers, and end users who rely on Samsung devices should care most. Any environment that centrally manages Samsung phones or tablets should confirm whether affected models are present and whether vendor updates have been applied.

Technical summary

The available source corpus identifies the issue only as an improper input validation vulnerability affecting Samsung Mobile Devices. CISA’s KEV entry marks it as known exploited and points to Samsung’s October 2021 security update page and the NVD record. No additional exploit mechanics, impact scope, or severity score are provided in the supplied data.

Defensive priority

High. CISA’s KEV inclusion indicates active exploitation risk, so remediation should be scheduled immediately and tracked to completion before the KEV due date when possible.

Recommended defensive actions

• Inventory Samsung mobile devices in scope and determine which models or firmware versions are affected.
• Apply Samsung security updates according to the vendor’s instructions as soon as they are available.
• If a device cannot be updated, follow CISA’s guidance and discontinue use of the product where feasible.
• Verify patch completion across fleet management, MDM, or endpoint reporting tools.
• Monitor Samsung security advisories and the NVD entry for any clarification or additional remediation notes.

Evidence notes

CISA’s Known Exploited Vulnerabilities catalog lists this entry as ‘Samsung Mobile Devices Improper Input Validation Vulnerability,’ with dateAdded 2023-06-29 and dueDate 2023-07-20. The CISA metadata recommends applying updates per vendor instructions or discontinuing use of the product if updates are unavailable. The supplied notes also reference Samsung’s security update page and the NVD record. The corpus does not provide CVSS metrics or detailed technical behavior.

Official resources