CVE-2026-43777 Details
Description
This issue 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. A remote attacker may be able to cause a denial of service.
A denial-of-service vulnerability has been identified in the Screen Sharing Server component of Apple macOS. This issue allows a remote attacker to cause unexpected system termination. The vulnerability is present in multiple macOS versions, including Sequoia 15.7.8, Sonoma 14.8.8, and Tahoe 26.6.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jul 28, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://support.apple.com/en-us/128067 | [email protected] | Release NotesVendor Advisory |
| https://support.apple.com/en-us/128071 | [email protected] | Release NotesVendor Advisory |
| https://support.apple.com/en-us/128072 | [email protected] | Release NotesVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-20 | Improper Input Validation | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| apple macos | >= 14.0, < 14.8.8 >= 15.0, < 15.7.8 >= 26.0, < 26.6 |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 28, 2026 | Initial Analysis | [email protected] |
| Jul 28, 2026 | CVE Modified | CISA-ADP |
| Jul 27, 2026 | New CVE Received | [email protected] |