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PatchSiren cyber security CVE debrief

CVE-2021-25337 Samsung CVE debrief

CVE-2021-25337 is a Samsung Mobile Devices improper access control vulnerability that CISA added to the Known Exploited Vulnerabilities catalog on 2022-11-08. Because CISA classifies it as known exploited, defenders should treat it as an active risk and apply Samsung’s updates per vendor guidance as soon as possible.

Vendor
Samsung
Product
Mobile Devices
CVSS
MEDIUM 4.4
CISA KEV
Listed
Original CVE published
2022-11-08
Original CVE updated
2022-11-08
Advisory published
2022-11-08
Advisory updated
2022-11-08

Who should care

Security teams responsible for Samsung mobile devices, mobile device management (MDM) administrators, and any organization that allows Samsung devices to access corporate data, apps, or identity services.

Technical summary

The available public record identifies the issue only at a high level: an improper access control flaw affecting Samsung mobile devices. The CISA KEV listing indicates the vulnerability is known to be exploited in the wild, but the supplied corpus does not include affected model ranges, attack prerequisites, or technical exploit details. Use the CVE record, NVD entry, and Samsung’s update guidance to confirm exposure and remediation steps.

Defensive priority

High. KEV inclusion means the vulnerability has been observed as exploited, so remediation should be prioritized over routine maintenance windows.

Recommended defensive actions

  • Apply Samsung updates according to vendor instructions as soon as possible.
  • Inventory Samsung mobile devices to determine which models and OS builds are exposed.
  • Use MDM or endpoint management tooling to verify patch status and enforce compliance.
  • Restrict or monitor access from unpatched devices to sensitive applications and data until remediation is complete.
  • Track CISA KEV status and vendor advisories for any updated guidance or affected-version details.

Evidence notes

CISA’s Known Exploited Vulnerabilities catalog lists CVE-2021-25337 as “Samsung Mobile Devices Improper Access Control Vulnerability,” with dateAdded 2022-11-08 and dueDate 2022-11-29, and notes to apply updates per vendor instructions. The CVE record and NVD entry supplied in the corpus corroborate the same vulnerability name and vendor/product mapping. The corpus does not provide CVSS, affected versions, or technical exploitation details.

Sources and references

Verified primary and authoritative sources

  • CVE-2021-25337 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2021-25337

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

  • CVE-2021-25337 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2021-25337

    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.