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PatchSiren cyber security CVE debrief

CVE-2021-25489 Samsung CVE debrief

CVE-2021-25489 is a Samsung Mobile Devices improper input validation vulnerability that CISA added to its Known Exploited Vulnerabilities catalog on 2023-06-29. Because CISA classifies it as known exploited, defenders should treat it as a priority patching item even though the supplied corpus does not include deeper impact details or a CVSS score.

Vendor
Samsung
Product
Mobile Devices
CVSS
LOW 3.3
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

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.

Sources and references

Verified primary and authoritative sources

  • CVE-2021-25489 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2021-25489

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2021-25489 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2021-25489

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

  • CISA Known Exploited Vulnerabilities catalog

    Publisher, destination, and source semantics verified

    URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

    Cybersecurity and Infrastructure Security Agency - Official CISA catalog of vulnerabilities known to be exploited in the wild.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

    cisa_kev

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.