CVE-2026-43807
Buffer overflow in Apple OS via malicious accessory can crash apps; high-severity.
Is CVE-2026-43807 being exploited?
Not confirmed. CVE-2026-43807 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 0.77% probability of exploitation in the next 30 days.
How severe is CVE-2026-43807?
CVE-2026-43807 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-2026-43807?
Yes. A fix has been recorded for CVE-2026-43807. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-43807 affect?
CVE-2026-43807 affects iOS (pre-26.5.2) - iPhone, iPadOS (pre-26.5.2) - iPad, macOS Sequoia (pre-15.7.8), macOS Sonoma (pre-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-2026-43807?
Update affected Apple OS releases immediately.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
A malicious accessory can trigger a buffer overflow via a physical connection causing app termination; may enable arbitrary code execution if fully exploited.
Patch when possible
- affected< 18.7.10
- affected< 26.5.2
- affected< 14.8.8
- affected< 15.7.8
- affected< 26.5.2
- 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.