CVE-2026-43653 Details
Description
The issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Sequoia 15.7.8, macOS Sonoma 14.8.7, macOS Tahoe 26.5, tvOS 26.5. An attacker on the local network may be able to cause a denial-of-service.
A denial-of-service vulnerability has been identified in the mDNSResponder component of Apple operating systems, including iOS 18.7.9, iPadOS 18.7.9, macOS Sonoma 14.8.7, macOS Tahoe 26.5, and tvOS 26.5. This vulnerability allows an attacker on the local network to cause a denial-of-service condition by exploiting a null pointer dereference, leading to unexpected application termination.
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 May 12, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://support.apple.com/en-us/127110 | [email protected] | Release NotesVendor Advisory |
| https://support.apple.com/en-us/127111 | [email protected] | Release NotesVendor Advisory |
| https://support.apple.com/en-us/127115 | [email protected] | Release NotesVendor Advisory |
| https://support.apple.com/en-us/127117 | [email protected] | Release NotesVendor Advisory |
| https://support.apple.com/en-us/127118 | [email protected] | Release NotesVendor Advisory |
| https://support.apple.com/en-us/128071 | [email protected] |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-400 | Uncontrolled Resource Consumption | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| apple ipados | < 18.7.9 >= 26.0, < 26.5 |
CPE
Remediation
| |
| apple iphone os | < 18.7.9 >= 26.0, < 26.5 |
CPE
Remediation
| |
| apple macos | >= 14.0, < 14.8.7 >= 26.0, < 26.5 |
CPE
Remediation
| |
| apple tvos | < 26.5 |
CPE
Remediation
| |
Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 27, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 13, 2026 | Initial Analysis | [email protected] |
| May 12, 2026 | CVE Modified | CISA-ADP |
| May 11, 2026 | New CVE Received | [email protected] |