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 vulnerability in question is CVE-2026-65400 CVSS score: 9.8, a critical authentication issue impacti...

How to hide vulnerability in macOS screen sharing with Apple

Apple has identified a vulnerability in the Screen Sharing feature of macOS versions Sequoia 15.7.9, Sonoma 14.8.9, and Tahoe 26.6.1. This vulnerability relates to an authentication issue in the Screen Sharing function, which allows network attackers to gain access without valid login credentials...

EUVD-2026-54216

An authentication issue was addressed with improved state management. This issue is fixed in macOS Sequoia 15.7.9, macOS Sonoma 14.8.9, macOS Tahoe 26.6.1. An attacker on the network may be able to authenticate to Screen Sharing without valid credentials...

VulnCheck KEV: CVE-2026-65400

An authentication issue was addressed with improved state management. This issue is fixed in macOS Sequoia 15.7.9, macOS Sonoma 14.8.9, macOS Tahoe 26.6.1. An attacker on the network may be able to authenticate to Screen Sharing without valid credentials...

CVE-2026-65400

An authentication issue was addressed with improved state management. This issue is fixed in macOS Sequoia 15.7.9, macOS Sonoma 14.8.9, macOS Tahoe 26.6.1. An attacker on the network may be able to authenticate to Screen Sharing without valid credentials...

CVE-2026-65400

An authentication issue was addressed with improved state management. This issue is fixed in macOS Sequoia 15.7.9, macOS Sonoma 14.8.9, macOS Tahoe 26.6.1. An attacker on the network may be able to authenticate to Screen Sharing without valid credentials...

CVE-2026-65400

An authentication issue was addressed with improved state management. This issue is fixed in macOS Sequoia 15.7.9, macOS Sonoma 14.8.9, macOS Tahoe 26.6.1. An attacker on the network may be able to authenticate to Screen Sharing without valid credentials...

CVE-2026-65400

CVE-2026-65400 affects macOS Screen Sharing. Root cause: insufficient state management during authentication, enabling a network attacker to authenticate without valid credentials. Impact: attacker on the network could gain Screen Sharing access. Remediation: patched in macOS Sequoia 15.7.9, macO...

CVE-2026-65400

An authentication issue was addressed with improved state management. This issue is fixed in macOS Sequoia 15.7.9, macOS Sonoma 14.8.9, macOS Tahoe 26.6.1. An attacker on the network may be able to authenticate to Screen Sharing without valid credentials...

About the security content of macOS Sonoma 14.8.9

About the security content of macOS Sonoma 14.8.9 This document describes the security content of macOS Sonoma 14.8.9. About Apple security updates For our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or release...

About the security content of macOS Sequoia 15.7.9

About the security content of macOS Sequoia 15.7.9 This document describes the security content of macOS Sequoia 15.7.9. About Apple security updates For our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or...

macOS 15.x < 15.7.9 (148171)

The remote host is running a version of macOS / Mac OS X that is 15.x prior to 15.7.9. It is, therefore, affected by a vulnerability: - An attacker on the network may be able to authenticate to Screen Sharing without valid credentials CVE-2026-65400 Note that Nessus has not tested for this issue...

About the security content of macOS Tahoe 26.6.1

About the security content of macOS Tahoe 26.6.1 This document describes the security content of macOS Tahoe 26.6.1. About Apple security updates For our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases...

CVE-2026-55977

Successful exploitation of this vulnerability could allow an attacker with local network access to bypass the application's rate-limiting mechanism, enabling brute-forcing of the screen-sharing code and potentially displaying harmful content on the affected screen...

CVE-2026-55977

Successful exploitation of this vulnerability could allow an attacker with local network access to bypass the application's rate-limiting mechanism, enabling brute-forcing of the screen-sharing code and potentially displaying harmful content on the affected screen...

CVE-2026-55977

Technical details about CVE-2026-55977 are not publicly available in the provided documents; monitor for updates from NVD and CVE sources.

EUVD-2026-49714

Successful exploitation of this vulnerability could allow an attacker with local network access to bypass the application's rate-limiting mechanism, enabling brute-forcing of the screen-sharing code and potentially displaying harmful content on the affected screen...

CVE-2026-55977 Bypass of application rate-limiting mechanism

Successful exploitation of this vulnerability could allow an attacker with local network access to bypass the application's rate-limiting mechanism, enabling brute-forcing of the screen-sharing code and potentially displaying harmful content on the affected screen...

CVE-2026-43665

This issue was addressed with additional entitlement checks. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8. A local attacker may be able to determine the legacy VNC password configured for Screen Sharing...

CVE-2026-43665

This issue was addressed with additional entitlement checks. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8. A local attacker may be able to determine the legacy VNC password configured for Screen Sharing...