CVE-2019-8591
HIGHCVSS 7.1/10EPSS 4.44%
Last modified
CVE-2019-8591 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. A type confusion issue was addressed with improved memory handling. This issue is fixed in iOS 12.3, macOS Mojave 10.14.5, tvOS 12.3, watchOS 5.2.1. EPSS estimates a 4.44% chance of exploitation in the next 30 days.
Description
A type confusion issue was addressed with improved memory handling. This issue is fixed in iOS 12.3, macOS Mojave 10.14.5, tvOS 12.3, watchOS 5.2.1. An application may be able to cause unexpected system termination or write kernel memory.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apple | Iphone Os | < 12.3 |
| Apple | Mac Os X | < 10.14.5 |
| Apple | Tvos | < 12.3 |
| Apple | Watchos | < 5.2.1 |
References
- https://support.apple.com/HT210118Vendor Advisory
- https://support.apple.com/HT210119Vendor Advisory
- https://support.apple.com/HT210120Vendor Advisory
- https://support.apple.com/HT210122Vendor Advisory
- https://support.apple.com/HT210118Vendor Advisory
- https://support.apple.com/HT210119Vendor Advisory
- https://support.apple.com/HT210120Vendor Advisory
- https://support.apple.com/HT210122Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2019-8591?
A type confusion issue was addressed with improved memory handling. This issue is fixed in iOS 12.3, macOS Mojave 10.14.5, tvOS 12.3, watchOS 5.2.1. An application may be able to cause unexpected system termination or write kernel memory.
How severe is CVE-2019-8591?
CVE-2019-8591 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 4.44% probability of exploitation in the next 30 days.
How do I fix CVE-2019-8591?
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.
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Are you affected by CVE-2019-8591?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST