CVE-2025-43353

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-09-15 · updated 2026-06-17
Weakness: CWE-787

Description

The issue was addressed with improved bounds checks. This issue is fixed in macOS Sequoia 15.7, macOS Sonoma 14.8, macOS Tahoe 26. Processing a maliciously crafted string may lead to heap corruption.

Affected products

Apple macOS: from 14.0 before 14.8; from 15.0 before 15.7 — fixed in 14.8, 15.7

How to fix

Upgrade to a fixed version: Apple macOS 14.8, 15.7. Check the vendor advisory for mitigations.

References

https://support.apple.com/en-us/125110
https://support.apple.com/en-us/125111
https://support.apple.com/en-us/125112
http://seclists.org/fulldisclosure/2025/Sep/53
http://seclists.org/fulldisclosure/2025/Sep/54
http://seclists.org/fulldisclosure/2025/Sep/55

Get alerted when CVE-2025-43353 or the next vulnerability affects your stack