CVE-2026-43653

mDNSResponder: An attacker on the local network may be able to cause a denial-of-service

CVE-2026-43653 is fixed in 3 products on 1 platform, first by Sonoma 14.8.7, released May 11, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

6.2

MEDIUM

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0019

8th percentile

The issue was addressed with improved memory handling.

Where it's fixed

Product	Fixed in	Fix	Released
macOS
Sequoia	15.7.8	Sequoia 15.7.8	Jul 27, 2026
Sonoma	14.8.7	Sonoma 14.8.7	May 11, 2026
Tahoe	26.5	Tahoe 26.5	May 11, 2026

Details

Published
May 11, 2026
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Vendor advisory
https://support.apple.com/en-us/127115

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