CVE-2026-43812
Use-after-free in Apple OS may crash devices; fixed in 26.6/15.7.8 updates.
Is CVE-2026-43812 being exploited?
Not confirmed. CVE-2026-43812 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 0.62% probability of exploitation in the next 30 days.
How severe is CVE-2026-43812?
CVE-2026-43812 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-2026-43812?
Yes. A fix has been recorded for CVE-2026-43812. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-43812 affect?
CVE-2026-43812 affects iOS 26.6, iPadOS 26.6, macOS Sequoia 15.7.8, macOS Tahoe 26.6, and 2 further products or versions. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-43812?
Apply the listed OS updates immediately across managed Apple devices.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
A malicious or compromised app can trigger a use-after-free to crash the OS, causing denial of service on affected devices.
Immediate action required
- affected< 18.7.10
- affected< 26.6
- affected< 15.7.8
- 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.