CVE-2026-43779
Apple macOS Network Connection Interception Vulnerability
Description
A logic issue was addressed with improved restrictions. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to intercept network connections intended for another process.
INFO
Published Date :
July 27, 2026, 9:17 p.m.
Last Modified :
July 28, 2026, 5:58 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | CRITICAL | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Update macOS Sequoia to 15.7.8 or later.
- Update macOS Sonoma to 14.8.8 or later.
- Update macOS Tahoe to 26.6 or later.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-43779.
| URL | Resource |
|---|---|
| https://support.apple.com/en-us/128067 | Release Notes Vendor Advisory |
| https://support.apple.com/en-us/128071 | Release Notes Vendor Advisory |
| https://support.apple.com/en-us/128072 | Release Notes Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-43779 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-43779
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-43779 vulnerability anywhere in the article.
-
The Hacker News
Apple macOS Screen Sharing Flaw Exploited on Internet-Exposed Macs to Install Monero Miner
A recently patched security flaw in Apple macOS has come under active exploitation in the wild to deploy a cryptocurrency miner, the Netherlands National Cyber Security Centre (NCSC) has warned. The v ... Read more
The following table lists the changes that have been made to the
CVE-2026-43779 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jul. 28, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* versions from (including) 14.0 up to (excluding) 14.8.8 *cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* versions from (including) 15.0 up to (excluding) 15.7.8 *cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* versions from (including) 26.0 up to (excluding) 26.6 Added Reference Type Apple Inc.: https://support.apple.com/en-us/128067 Types: Release Notes, Vendor Advisory Added Reference Type Apple Inc.: https://support.apple.com/en-us/128071 Types: Release Notes, Vendor Advisory Added Reference Type Apple Inc.: https://support.apple.com/en-us/128072 Types: Release Notes, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 28, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-284 Added SSVC {'id': 'CVE-2026-43779', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-07-28T15:07:05.984529Z'} -
New CVE Received by [email protected]
Jul. 27, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Apple', 'product': 'macOS', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '14.8.8', 'versionType': 'custom'}, {'status': 'affected', 'version': '0', 'lessThan': '15.7.8', 'versionType': 'custom'}, {'status': 'affected', 'version': '0', 'lessThan': '26.6', 'versionType': 'custom'}]}] Added Description A logic issue was addressed with improved restrictions. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to intercept network connections intended for another process. Added Reference https://support.apple.com/en-us/128067 Added Reference https://support.apple.com/en-us/128071 Added Reference https://support.apple.com/en-us/128072