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CVE-2021-25394 Samsung CVE debrief

CVE-2021-25394 is identified in the supplied CISA Known Exploited Vulnerabilities record as a Samsung Mobile Devices race condition vulnerability. CISA added the entry on 2023-06-29 and set a remediation due date of 2023-07-20. Because it is in the KEV catalog, defenders should treat it as a high-priority issue even though the supplied record does not include a CVSS score.

Vendor
Samsung
Product
Mobile Devices
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2023-06-29
Original CVE updated
2023-06-29
Advisory published
2023-06-29
Advisory updated
2023-06-29

Who should care

Organizations that manage Samsung mobile devices, including endpoint/security teams, mobile device management administrators, IT operations, and users who rely on Samsung devices for corporate access. Any environment that allows Samsung mobile devices to connect to sensitive systems should prioritize this item.

Technical summary

The supplied source corpus gives only limited technical detail: the vulnerability is described as a race condition affecting Samsung Mobile Devices. CISA’s KEV metadata marks it as known exploited and links to the vendor update information referenced in the record. No further exploit mechanics, impact scope, or affected model list are included in the provided data.

Defensive priority

High. CISA has placed this CVE in the Known Exploited Vulnerabilities catalog, which is a strong indicator of real-world risk and makes timely remediation a priority. The KEV record also assigns a due date, reinforcing that this should be handled urgently according to vendor guidance.

Recommended defensive actions

  • Apply Samsung security updates and follow the vendor instructions referenced in the KEV record as soon as possible.
  • If updates are not available for a device, remove it from service or discontinue use as recommended by CISA.
  • Use mobile device management or asset inventory to identify Samsung devices that may be exposed and verify remediation status.
  • Prioritize internet-facing, privileged, or corporate-access devices first in your patch and risk triage workflow.
  • Confirm that any compensating controls, access restrictions, or temporary mitigations remain in place until remediation is complete.

Evidence notes

All factual statements above are limited to the supplied source corpus and official links. The CISA KEV metadata identifies the vulnerability as ‘Samsung Mobile Devices Race Condition Vulnerability,’ marks it as known exploited, and records dateAdded=2023-06-29 and dueDate=2023-07-20. The supplied record also points to Samsung’s security update page, CVE.org, and NVD as official references. No CVSS score or detailed technical analysis was provided in the corpus.

Official resources

Publicly listed by CISA in the Known Exploited Vulnerabilities catalog on 2023-06-29. This debrief intentionally avoids unsupported technical detail and does not include exploit instructions.