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PatchSiren cyber security CVE debrief

CVE-2025-46280 Apple CVE debrief

An out-of-bounds read vulnerability in macOS was resolved through improved bounds checking. The issue, which could allow an application to trigger unexpected system termination, was addressed in macOS Tahoe 26. No CVSS score or severity rating has been assigned by NVD as of the CVE publication date. The vulnerability is not listed in CISA's Known Exploited Vulnerabilities catalog.

Vendor
Apple
Product
macOS
CVSS
MEDIUM 5.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-05-26
Original CVE updated
2026-07-23
Advisory published
2026-05-26
Advisory updated
2026-07-23

Who should care

macOS system administrators, endpoint security teams, and organizations with managed Apple device fleets should prioritize patching to prevent application-induced system instability.

Technical summary

Out-of-bounds read condition in macOS, remediated through improved bounds checking in macOS Tahoe 26. Attack vector requires local application execution. Impact limited to denial of service (unexpected system termination) per current description. No evidence of code execution or privilege escalation in disclosed information.

Defensive priority

medium

Recommended defensive actions

  • Apply macOS Tahoe 26 or later to obtain the bounds checking fix
  • Monitor Apple security advisories for additional technical details if published
  • Review application sandboxing and code signing policies to limit exposure to untrusted applications
  • Consider endpoint detection for anomalous application termination patterns pending further technical disclosure

Evidence notes

CVE description indicates fix in macOS Tahoe 26 via improved bounds checking. Apple security advisory reference present but not yet retrieved for additional technical detail.

Sources and references

Verified primary and authoritative sources

  • CVE-2025-46280 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2025-46280

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

  • CVE-2025-46280 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2025-46280

    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.