Kernel-level macOS flaw with high CVSS impacting widely deployed Apple desktops/laptops; requires enterprise-wide patching.
CVE-2026-43710
macOS kernel memory flaw may crash or corrupt kernel (Sequoia/Sonoma/Tahoe).
Is CVE-2026-43710 being exploited?
Not confirmed. CVE-2026-43710 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 0.52% probability of exploitation in the next 30 days.
How severe is CVE-2026-43710?
CVE-2026-43710 is rated Critical with a CVSS score of 9.8. 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-2026-43710?
Yes. A fix has been recorded for CVE-2026-43710. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-43710 affect?
CVE-2026-43710 affects macOS Sequoia (fixed in 15.7.8), macOS Sonoma (fixed in 14.8.8), macOS Tahoe (fixed in 26.6). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-43710?
Install the specified macOS updates immediately
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
May cause system crashes (DoS) or corrupt kernel memory, potentially enabling privilege escalation or arbitrary kernel code execution.
Immediate action required
- affected< 14.8.8
- affected< 15.7.8
- affected< 26.6
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.