What macOS Sonoma 14.7.8 Fixes
macOS Sonoma 14.7.8, released August 20, 2025, fixes 1 vulnerability in 1 part of the system, according to Apple's security advisory.
Apple says one of these flaws — CVE-2025-43300 — may already have been exploited. That makes macOS Sonoma 14.7.8 an update to install now rather than at the weekend.
It has since been superseded: the newest security release for macOS Sonoma is macOS Sonoma 14.8.9, from August 6, 2026, which includes these fixes.
| What an attacker could do | Fixes |
|---|---|
| Crash or denial of service | 1 |
Grouped by us from the impact Apple gives for each fix; the impact lines below are Apple's own.
Exploited Before the Fix
Apple flags a fix as possibly exploited when it has a credible report that the flaw was used against real people before the patch. This one is the reason to update today.
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ImageIO Exploited
Processing a malicious image file may result in memory corruption. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals.
An out-of-bounds write issue was addressed with improved bounds checking.
CVE-2025-43300
Which Devices Get macOS Sonoma 14.7.8
Apple lists macOS Sonoma 14.7.8 for: macOS Sonoma.
How to Install macOS Sonoma 14.7.8
On the Mac, open System Settings → General → Software Update. Macs that cannot run the newest macOS are offered the update for their own version there.
Security fixes are cumulative: any later release for the same version includes these as well, so if you are already past macOS Sonoma 14.7.8 there is nothing to do.
Every Fix in macOS Sonoma 14.7.8
The rest of Apple's advisory — every fix not already listed above, the most serious kinds first. Each entry is the part of the system affected, Apple's description of the impact and the fix, and the CVE ID.
macOS Sonoma Security Release History
macOS Sonoma 14.7.8 in context: the security releases Apple has published for macOS Sonoma, newest first, with the number of fixes each carried.
| Release | Released | Fixes |
|---|---|---|
| macOS Sonoma 14.8.4 | February 11, 2026 | 50 |
| macOS Sonoma 14.8.3 | December 12, 2025 | 21 |
| macOS Sonoma 14.8.2 | November 3, 2025 | 51 |
| macOS Sonoma 14.8.1 | September 29, 2025 | 1 |
| macOS Sonoma 14.8 | September 15, 2025 | 47 |
| macOS Sonoma 14.7.8 | August 20, 2025 | 1 Exploited |
| macOS Sonoma 14.7.7 | July 29, 2025 | 52 |
| macOS Sonoma 14.7.6 | May 12, 2025 | 33 |
| macOS Sonoma 14.7.5 | March 31, 2025 | 115 |
| macOS Sonoma 14.7.4 | February 10, 2025 | 1 Exploited |
| macOS Sonoma 14.7.3 | January 27, 2025 | 48 |
The Same Fixes Elsewhere
Apple ships most fixes to every platform that shares the code, and to older versions still under support. These releases close at least one of the same CVEs:
Frequently Asked Questions
What does macOS Sonoma 14.7.8 fix?
1 security vulnerability in 1 part of the system, from Apple's advisory of August 20, 2025.
Was anything fixed in macOS Sonoma 14.7.8 exploited?
Yes. Apple says CVE-2025-43300 may have been exploited before the fix. Install it now.
Which devices can install macOS Sonoma 14.7.8?
macOS Sonoma.
Is macOS Sonoma 14.7.8 the latest security update?
No. macOS Sonoma 14.8.9, from August 6, 2026, is newer and includes these fixes.
Source: About the security content of macOS Sonoma 14.7.8, Apple. Rechecked automatically while Apple is still adding entries.