CVE-2026-43677

WebDAV: Connecting to a malicious WebDAV server may lead to unexpected app termination

CVE-2026-43677 is fixed in 2 products on 1 platform, first by Sequoia 15.8, released September 14, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

6.5

MEDIUM

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0040

34th percentile

An out-of-bounds write issue was addressed by removing the vulnerable code.

Where it's fixed

Product	Fixed in	Fix	Released
macOS
Sequoia	15.8	Sequoia 15.8	Sep 14, 2026
Tahoe	26.7	Tahoe 26.7	Sep 14, 2026

Details

Published
September 14, 2026
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Vendor advisory
https://support.apple.com/en-us/149042

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