Apple macOS Improper Authentication Vulnerability
CVE-2026-65400 Exploited
Apple macOS contains an improper authentication vulnerability that could allow an attacker on the network to authenticate to Screen Sharing without valid credentials.
Being exploited in the wild
Catalogued 18 August 2026 · US federal remediation deadline 21 August 2026
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…
Exploit code is also public: Public PoC
- Public PoCpanchocosil/CVE-2026-65400-poc10 stars
- Public PoCacheong08/CVE-2026-6540010 stars
- Public PoCHORKimhab/CVE-2026-654003 stars
Assessment
- CVSS
- Not yet scored
- Severity
- Unscored
- Known exploited
- Yes — listed in the CISA KEV catalog
- Exploit availability
- CISA KEV, Public PoC
- Published
- 18 August 2026
- Last updated
- 18 August 2026
- Affected
- Apple · macOS
- Weakness
- CWE-287
At the source
References
Query this programmatically
Agents can read this through the MCP endpoint, or over HTTP:
curl https://cve.zerocrew.in/api/cve/CVE-2026-65400