High severity7.1NVD Advisory· Published Jul 27, 2026· Updated Jul 28, 2026

CVE-2026-43771

Description

A stack overflow was addressed with improved input validation. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to cause a denial-of-service.

Affected products

Apple Inc./macOS
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
Range: >=14.0,<14.8.8
Apple Inc./macOS Sequoiallm-fuzzy
Range: = 15.7.8
Apple Inc./macOS Sonomallm-fuzzy
Range: = 14.8.8
Apple Inc./macOS Tahoellm-fuzzy
Range: = 26.6

Patches

Vulnerability mechanics

References

support.apple.com/en-us/128067nvdRelease NotesVendor Advisory
support.apple.com/en-us/128071nvdRelease NotesVendor Advisory
support.apple.com/en-us/128072nvdRelease NotesVendor Advisory

News mentions

Apple Patches Everything (July 2026), (Wed, Jul 29th)
SANS Internet Storm Center · Jul 29, 2026
Apple Releases 25 macOS Security Patches, Including CUPS Privilege Escalation Flaw
Vypr Intelligence · Jul 27, 2026

cvss	0.461
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000