CVE-2026-112421 Apple CVE debrief

Who should care

Defenders responsible for macOS systems, particularly those exposed to untrusted apps, should assess and prioritize patching for this vulnerability. System administrators should monitor for suspicious activity related to file system changes. Defenders should verify and apply patches to prevent potential file system modifications.

Why it matters

A race condition vulnerability in macOS systems allows apps to modify protected file system parts. Defenders should prioritize verifying and applying patches for affected systems, particularly those exposed to untrusted apps.

• An app may be able to modify protected parts of the file system.
• Defenders should verify and apply patches to prevent potential file system modifications.
• System administrators should monitor for suspicious activity related to file system changes.

Technical summary

A race condition vulnerability was addressed with improved handling of symbolic links in macOS Golden Gate 27.2, macOS Sequoia 15.8.2, and macOS Tahoe 26.7.2. This vulnerability allows an app to modify protected parts of the file system, which can lead to potential security risks. Defenders should prioritize verifying and applying patches for affected systems, particularly those exposed to untrusted apps, to prevent potential file system modifications. The vulnerability was addressed with improved handling of symbolic links.

Defensive priority

Defenders should prioritize verifying and applying patches for affected macOS systems, particularly those exposed to untrusted apps.

Recommended defensive actions

• Verify and apply patches for macOS Golden Gate 27.2, macOS Sequoia 15.8.2, and macOS Tahoe 26.7.2
• Restrict app permissions and access to sensitive file system areas
• Monitor system logs for suspicious activity related to file system modifications
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD entry provide details on the vulnerability and affected systems. Apple support pages offer patches for the issue. The vulnerability was addressed with improved handling of symbolic links in macOS Golden Gate 27.2, macOS Sequoia 15.8.2, and macOS Tahoe 26.7.2. Defenders should verify and apply patches to prevent potential file system modifications. System administrators should monitor for suspicious activity related to file system changes.

Sources and 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.