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Vulnerabilities / CVE-2026-65400

CVE-2026-65400

Published 2026-08-06 · published (not yet in NVD)

CVE-2026-65400

Exploited in the wild: CISA added it to the Known Exploited Vulnerabilities catalog on 2026-08-18, with a fix-by date of 2026-08-21. Patch it first.

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.

9.8 CRITICAL
CVSS 3.1 · CNA
1.7%
chance of exploitation in the next 30 days (EPSS; higher than 77% of CVEs)

An authentication issue was addressed with improved state management. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.7.9, macOS Sonoma 14.8.9, macOS Tahoe 26.6.1, macOS Tahoe 26.7. An attacker on the network may be able to authenticate to Screen Sharing without valid credentials.

Scores

Affected products

  • Apple macOS: < 14.8.9; < 15.7.9; < 26.6.1; < 26.7; < 27
5 references (advisories, patches, write-ups)

Sources: CVE.org, FIRST EPSS. Missing ones did not answer or have no record yet.

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