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PatchSiren cyber security CVE debrief

CVE-2021-1048 Android CVE debrief

CVE-2021-1048 is an Android Kernel use-after-free vulnerability that CISA added to its Known Exploited Vulnerabilities catalog on 2022-05-23. Because it is listed in KEV, defenders should treat it as actively exploited and prioritize remediation using vendor guidance rather than waiting for a broader severity score.

Vendor
Android
Product
Kernel
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2022-05-23
Original CVE updated
2022-05-23
Advisory published
2022-05-23
Advisory updated
2022-05-23

Who should care

Organizations running Android devices, mobile fleets, embedded Android deployments, and any team responsible for patching Android kernel components should prioritize this CVE. Security and endpoint management teams should also track it because CISA identifies it as known exploited.

Technical summary

The supplied corpus identifies the issue as a use-after-free vulnerability in the Android Kernel. No additional technical details, affected component specifics, or exploit conditions are provided in the source corpus. The key defensive signal is CISA KEV inclusion, which indicates known exploitation and a need for prompt patching.

Defensive priority

High. CISA KEV inclusion means this vulnerability should be remediated as soon as possible, with priority over non-exploited issues. The provided CISA deadline associated with the KEV entry is 2022-06-13.

Recommended defensive actions

  • Apply vendor-provided Android updates and follow vendor instructions as soon as possible.
  • Confirm whether any Android devices, builds, or embedded products in your environment are affected.
  • Prioritize exposure reduction and patch deployment across managed fleets before routine maintenance windows.
  • Track remediation status through mobile device management, EDR, or asset inventory tooling.
  • Use the CISA KEV catalog to validate whether any unpatched Android systems remain in scope.

Evidence notes

This debrief uses only the supplied corpus and official links. The vulnerability name, vendor/product mapping, KEV status, date added, due date, and required action come from the provided CISA KEV source item metadata and timeline fields. No additional technical impact claims are made because the corpus does not provide them.

Sources and references

Verified primary and authoritative sources

  • CVE-2021-1048 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2021-1048

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

  • CVE-2021-1048 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2021-1048

    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.