CVE-2026-20666
MEDIUMCVSS 5.5/10EPSS 0.11%
Last modified
CVE-2026-20666 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. An authorization issue was addressed with improved state management. This issue is fixed in macOS Tahoe 26.3. EPSS estimates a 0.11% chance of exploitation in the next 30 days.
Description
An authorization issue was addressed with improved state management. This issue is fixed in macOS Tahoe 26.3. An app may be able to access sensitive user data.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apple | Macos | < 26.3 |
References
- https://support.apple.com/en-us/126348Release Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-20666?
An authorization issue was addressed with improved state management. This issue is fixed in macOS Tahoe 26.3. An app may be able to access sensitive user data.
How severe is CVE-2026-20666?
CVE-2026-20666 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.11% probability of exploitation in the next 30 days.
How do I fix CVE-2026-20666?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2026-20666?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST