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PatchSiren cyber security CVE debrief

CVE-2022-26758 Apple CVE debrief

CVE-2022-26758 is a HIGH severity vulnerability in Apple macOS Monterey versions prior to 12.4. A malicious application may cause unexpected changes in memory shared between processes, leading to memory corruption.

Vendor
Apple
Product
macOS Monterey
CVSS
HIGH 7.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-10
Original CVE updated
2026-06-11
Advisory published
2026-06-10
Advisory updated
2026-06-11

Who should care

Users of Apple macOS Monterey versions prior to 12.4, administrators of affected systems, and security teams responsible for patch management.

Technical summary

A memory corruption issue was addressed with improved state management. This issue is fixed in macOS Monterey 12.4. The vulnerability has a CVSS score of 7.1 and is classified as HIGH severity.

Defensive priority

HIGH

Recommended defensive actions

  • Apply the patch: Upgrade to macOS Monterey 12.4 or later.
  • Verify system configuration: Ensure that only trusted applications are installed and running on the system.
  • Monitor system activity: Regularly review system logs for suspicious activity.

Evidence notes

The CVE record and NVD detail pages provide additional information about the vulnerability, including its CVSS vector and weaknesses.

Sources and references

Verified primary and authoritative sources

  • CVE-2022-26758 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2022-26758

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

  • CVE-2022-26758 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2022-26758

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

Supplemental references

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.