CVE-2026-43677: Connecting to a malicious WebDAV server may lead to unexpected app termination in Apple macOS
CVE-2026-43677 is an out-of-bounds write vulnerability in Apple macOS that could cause unexpected application termination when connecting to a malicious WebDAV server. The issue has been fixed by removing the vulnerable code in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7.
AI Analysis
Technical Summary
This vulnerability involves an out-of-bounds write triggered by connecting to a malicious WebDAV server, which may lead to unexpected termination of applications on affected macOS versions. Apple addressed this issue by removing the vulnerable code in the specified macOS releases.
Potential Impact
An attacker controlling a malicious WebDAV server could cause applications on affected macOS versions to terminate unexpectedly, potentially disrupting user activity or services relying on WebDAV connections.
Mitigation Recommendations
Apple has released fixed versions macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7 that remove the vulnerable code. Users and administrators should update to these versions to remediate the vulnerability.
CVE-2026-43677: Connecting to a malicious WebDAV server may lead to unexpected app termination in Apple macOS
Description
CVE-2026-43677 is an out-of-bounds write vulnerability in Apple macOS that could cause unexpected application termination when connecting to a malicious WebDAV server. The issue has been fixed by removing the vulnerable code in macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7.
Affected software
Apple
macOS
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves an out-of-bounds write triggered by connecting to a malicious WebDAV server, which may lead to unexpected termination of applications on affected macOS versions. Apple addressed this issue by removing the vulnerable code in the specified macOS releases.
Potential Impact
An attacker controlling a malicious WebDAV server could cause applications on affected macOS versions to terminate unexpectedly, potentially disrupting user activity or services relying on WebDAV connections.
Mitigation Recommendations
Apple has released fixed versions macOS Golden Gate 27, macOS Sequoia 15.8, and macOS Tahoe 26.7 that remove the vulnerable code. Users and administrators should update to these versions to remediate the vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apple
- Date Reserved
- 2026-05-01T22:46:21.641Z
- State
- PUBLISHED
Threat ID: 6aa860f055bf5e2cf59d212e
Added to database: 09/14/2026, 21:02:40 UTC
Last enriched: 09/14/2026, 22:22:58 UTC
Last updated: 09/15/2026, 03:01:22 UTC
Views: 3
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