CVE-2026-43779

Screen Sharing Server: An app may be able to intercept network connections intended for another process

CVE-2026-43779 is fixed in 3 products on 1 platform, first by Sequoia 15.7.8, released July 27, 2026. It is not reported as exploited. Patch Radar priority: Urgent.

Urgent

CVSS

9.8

CRITICAL

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0054

45th percentile

A logic issue was addressed with improved restrictions.

Where it's fixed

Product	Fixed in	Fix	Released
macOS
Sequoia	15.7.8	Sequoia 15.7.8	Jul 27, 2026
Sonoma	14.8.8	Sonoma 14.8.8	Jul 27, 2026
Tahoe	26.6	Tahoe 26.6	Jul 27, 2026

Details

Published
July 27, 2026
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vendor advisory
https://support.apple.com/en-us/128072

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