Widely used macOS OS; sandbox-escape could affect many devices, risking data/system access.
CVE-2026-28827
macOS sandbox escape via path parsing issue.
Is CVE-2026-28827 being exploited?
Not confirmed. CVE-2026-28827 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.28% probability of exploitation in the next 30 days.
How severe is CVE-2026-28827?
CVE-2026-28827 is rated Critical. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-28827?
Yes. A fix has been recorded for CVE-2026-28827. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-28827 affect?
CVE-2026-28827 affects macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-28827?
Apply latest macOS updates ASAP (15.7.5/14.8.5/26.4).
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Sandbox escape enables a malicious app to access restricted data and system resources.
Patch when possible
- affected< 14.8.5
- affected< 15.7.5
- affected< 26.4
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.