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CVE-2026-65400 is an authentication bypass vulnerability in Apple macOS Screen Sharing. The issue was attributed to improper state management in the authentication flow, allowing a network-based attacker to authenticate to the Screen Sharing service without valid credentials. Apple addressed the flaw by improving state management in macOS Sequoia 15.7.9, macOS Sonoma 14.8.9, and macOS Tahoe 26.6.1. Successful exploitation results in a security restriction bypass affecting remote access controls for Screen Sharing.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A high-severity authentication bypass vulnerability in Apple Screen Sharing that could allow a network attacker to authenticate without valid credentials.
A screen sharing vulnerability mentioned in passing as part of Apple's minor release updates.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.