CVE-2026-43806 Details
Description
A denial of service issue was addressed by removing the vulnerable code. This issue is fixed in macOS Tahoe 26.6. A local attacker may be able to cause a denial of service.
A denial-of-service vulnerability has been identified in the mDNSResponder component of Apple macOS Tahoe. This issue allows a local attacker to cause a denial-of-service condition by exploiting a flaw that was present in the code. The vulnerability has been addressed by removing the problematic code, and users can upgrade to macOS Tahoe 26.6 to mitigate this issue.
Users can upgrade to macOS Tahoe 26.6 to address this vulnerability.
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 |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-400 | Uncontrolled Resource Consumption | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| apple macos | >= 26.0, < 26.6 |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 30, 2026 | Initial Analysis | [email protected] |
| Jul 28, 2026 | CVE Modified | CISA-ADP |
| Jul 27, 2026 | New CVE Received | [email protected] |