CVE-2025-43400

FontParser: Processing a maliciously crafted font may lead to unexpected app termination or corrupt process memory

CVE-2025-43400 is fixed in 3 products on 1 platform, first by Sequoia 15.7.1, released September 29, 2025. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

6.3

MEDIUM

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0730

94th percentile

An out-of-bounds write issue was addressed with improved bounds checking.

Where it's fixed

Product	Fixed in	Fix	Released
macOS
Sequoia	15.7.1	Sequoia 15.7.1	Sep 29, 2025
Sonoma	14.8.1	Sonoma 14.8.1	Sep 29, 2025
Tahoe	26.0.1	Tahoe 26.0.1	Sep 29, 2025

Details

Published
September 29, 2025
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Vendor advisory
https://support.apple.com/en-us/125329

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