CVE-2026-43773

criticalCVSS 9.8covered by 1 sourcefirst seen 2026-07-27

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. Mounting a maliciously crafted disk image may cause unexpected system termination or corrupt kernel memory.

⚡ Watch CVE-2026-43773

Get an email if CVE-2026-43773 is added to CISA KEV, gains public exploit code, or a new advisory cites it — max one per day, one-click unsubscribe.

Exploitation outlook

Low exploitation risk0.42% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 34% of all EPSS-scored CVEs.

Advisory coverage (1)

criticalCVE-2026-43773: An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macO…nvd · 2026-07-27

External references

NVD record for CVE-2026-43773

CVE.org record

Embed the live status

— this badge updates automatically when the KEV or exploit status changes. How to embed it →

[![CVE-2026-43773 status](https://www.csirts.com/badge/CVE-2026-43773)](https://www.csirts.com/cve/CVE-2026-43773)