SEPTEMBER 13, 2026
Live Feed
Back to database
Case File

CVE-2026-65400

CRITICAL · CVSS 9.8 EPSS 9.90% CISA KEV · Actively Exploited

Source: NVD + CISA KEV + EPSS · Published 2026-08-06 · Last synced 2026-09-05

CyberRota Analysis

AI-Generated

An authentication vulnerability in the Screen Sharing feature of macOS allows attackers on the same network to gain unauthorized access without valid credentials. This issue has been resolved in macOS Sequoia 15.7.9, macOS Sonoma 14.8.9, and macOS Tahoe 26.6.1. Organizations using these macOS versions should prioritize updating to mitigate the risk of unauthorized access to sensitive systems.

CISA KEV Details

Status: This CVE is listed in CISA's Known Exploited Vulnerabilities catalog.

Ransomware use: Unknown

Added to KEV: 2026-08-18

Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

CVE
CVE-2026-65400
Severity
CRITICAL
CVSS
9.8
EPSS
9.90%

Original NVD Description

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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)