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PatchSiren cyber security CVE debrief

CVE-2020-3837 Apple CVE debrief

CVE-2020-3837 is an Apple memory corruption vulnerability affecting multiple products and listed by CISA in the Known Exploited Vulnerabilities catalog. Because CISA has identified it as known exploited, organizations should treat it as a high-priority patching item and apply Apple updates per vendor instructions.

Vendor
Apple
Product
Multiple Products
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2022-06-27
Original CVE updated
2022-06-27
Advisory published
2022-06-27
Advisory updated
2022-06-27

Who should care

Organizations and individuals that manage or use Apple products, especially security teams responsible for endpoint patching, asset inventory, and vulnerability remediation.

Technical summary

The supplied corpus identifies CVE-2020-3837 as a memory corruption vulnerability in Apple multiple products. No further component, version-range, or exploitation detail is provided in the supplied source set, but CISA’s KEV listing indicates it is known to be exploited in the wild.

Defensive priority

High. CISA KEV inclusion means remediation should be prioritized over routine patch cycles, with attention to Apple devices that are exposed, managed remotely, or difficult to update.

Recommended defensive actions

  • Inventory all Apple products in scope and confirm which systems may be affected.
  • Apply Apple vendor updates and remediation guidance as soon as possible.
  • Prioritize patching for internet-facing, high-value, or frequently targeted endpoints first.
  • Verify remediation before the CISA KEV due date and confirm devices remain current afterward.
  • Track any vendor advisories or security update notes that reference CVE-2020-3837.

Evidence notes

This debrief is intentionally limited to the supplied corpus and official links. The only explicit facts provided are the CVE identifier, Apple vendor attribution, memory corruption classification, and CISA KEV status with the listed dateAdded/dueDate. No additional exploitation mechanics, affected versions, or root-cause specifics were supplied.

Sources and references

Verified primary and authoritative sources

  • CVE-2020-3837 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2020-3837

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

  • CVE-2020-3837 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2020-3837

    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.