CVE-2026-43769
Integer overflow in Apple OS allowing an app to trigger system crash (DoS).
Is CVE-2026-43769 being exploited?
Not confirmed. CVE-2026-43769 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 0.67% probability of exploitation in the next 30 days.
How severe is CVE-2026-43769?
CVE-2026-43769 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-2026-43769?
Yes. A fix has been recorded for CVE-2026-43769. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-43769 affect?
CVE-2026-43769 affects iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, and 4 further products or versions. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-43769?
Update affected Apple OS builds to the patched versions immediately.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Local or malicious app can cause unexpected system termination (Denial of Service), disrupting device availability and services.
Patch when possible
- affected< 18.7.10
- affected< 26.6
- affected< 14.8.8
- affected< 15.7.8
- affected< 26.6
- affected< 26.6
- affected< 26.6
- 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.