CVE-2026-84566
HIGHCVSS 7.8/10EPSS 0.16%
Last modified
CVE-2026-84566 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. The issue was addressed with improved memory handling. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. EPSS estimates a 0.16% chance of exploitation in the next 30 days.
Description
The issue was addressed with improved memory handling. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. A local attacker may be able to cause unexpected system termination or corrupt kernel memory.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apple | Ipados | < 26.7 |
| Apple | Iphone Os | < 26.7 |
| Apple | Macos | >= 15.0, < 15.8 |
| Apple | Macos | >= 26.0, < 26.7 |
References
- https://support.apple.com/en-us/149034Release Notes, Vendor Advisory
- https://support.apple.com/en-us/149035Release Notes, Vendor Advisory
- https://support.apple.com/en-us/149041Release Notes, Vendor Advisory
- https://support.apple.com/en-us/149042Release Notes, Vendor Advisory
- https://support.apple.com/en-us/149043Release Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-84566?
The issue was addressed with improved memory handling. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. A local attacker may be able to cause unexpected system termination or corrupt kernel memory.
How severe is CVE-2026-84566?
CVE-2026-84566 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.16% probability of exploitation in the next 30 days.
How do I fix CVE-2026-84566?
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
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- 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.
Related CVEs from 2026
- CVE-2026-84560An authorization issue was addressed with improved state man…6.1
- CVE-2026-84561A double free issue was addressed with improved memory manag…9.8
- CVE-2026-84562A race condition was addressed with additional validation. T…4.7
- CVE-2026-84563A logic issue was addressed with improved checks. This issue…7.5
- CVE-2026-84564An uninitialized memory issue was addressed with improved me…4.3
- CVE-2026-84565An out-of-bounds read was addressed with improved bounds che…7.1
- CVE-2026-84567The issue was addressed with improved memory handling. This …5.5
- CVE-2026-84568A path traversal issue was addressed with improved path vali…7.8
- CVE-2026-84569An access issue was addressed with additional sandbox restri…5.5
- CVE-2026-8457The WooCommerce - Social Login plugin for WordPress is vulne…9.8
- CVE-2026-84570A logic issue was addressed with improved checks. This issue…4.4
- CVE-2026-84571A buffer overflow was addressed with improved bounds checkin…4.3
Are you affected by CVE-2026-84566?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST