PatchSiren

PatchSiren cyber security CVE debrief

CVE-2021-39793 Google CVE debrief

CVE-2021-39793 is a Google Pixel out-of-bounds write vulnerability that CISA added to its Known Exploited Vulnerabilities catalog on 2022-04-11. Because it is already known to be exploited, it should be treated as a priority patching item for any Google Pixel devices in your environment.

Vendor
Google
Product
Pixel
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2022-04-11
Original CVE updated
2022-04-11
Advisory published
2022-04-11
Advisory updated
2022-04-11

Who should care

Anyone responsible for Google Pixel devices should pay attention, especially mobile device administrators, endpoint security teams, and organizations managing corporate or bring-your-own-device fleets.

Technical summary

The supplied corpus identifies the issue as an out-of-bounds write affecting Google Pixel. Out-of-bounds write bugs are memory-safety defects that can lead to unstable behavior or broader security impact, but the supplied sources do not provide more specific technical details such as affected models, attack vector, or exact consequence. CISA’s KEV listing confirms the vulnerability has been exploited in the wild.

Defensive priority

High. CISA’s KEV inclusion means this issue is already known to be exploited, and the catalog assigns a remediation due date of 2022-05-02.

Recommended defensive actions

  • Apply updates per vendor instructions as soon as possible.
  • Check whether any Google Pixel devices are present in your fleet and confirm their patch status.
  • Prioritize remediation for managed devices that are actively used or exposed to higher-risk environments.
  • Verify that endpoint management and compliance tools are reporting current security update levels for affected devices.
  • Track the CISA KEV catalog and vendor advisories for any follow-on guidance.

Evidence notes

Evidence is limited to the supplied CVE metadata and CISA KEV source item. The corpus confirms the CVE ID, product family (Google Pixel), vulnerability type (out-of-bounds write), KEV status, date added (2022-04-11), due date (2022-05-02), and the required action text: apply updates per vendor instructions. No additional exploit details, affected versions, or CVSS score were supplied.

Sources and references

Verified primary and authoritative sources

  • CVE-2021-39793 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2021-39793

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

  • CVE-2021-39793 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2021-39793

    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.