🔥 This vulnerability is being actively exploited in the wild (CISA Known Exploited Vulnerabilities catalog)
CVE-2026-65400: Apple macOS Improper Authentication Vulnerability
Summary
Apple macOS has a security flaw that allows attackers on the same network to access Screen Sharing (a remote desktop feature) without needing a valid password. This vulnerability is currently being exploited by attackers in real-world attacks.
Solution / Mitigation
Apply mitigations according to Apple's vendor instructions and follow CISA's BOD 26-04 guidance for security update prioritization. If mitigations are unavailable, discontinue use of the affected product. See Apple support pages at https://support.apple.com/en-us/148170, https://support.apple.com/en-us/148171, and https://support.apple.com/en-us/148172 for specific patching instructions.
Vulnerability Details
EPSS: 0.5%
Yes
🔥 Actively Exploited
August 17, 2026
Classification
Affected Vendors
Related Issues
Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-65400
First tracked: August 18, 2026 at 02:01 PM
Classified by LLM (prompt v3) · confidence: 65%