CVE-2020-9839
HIGHCVSS 7/10EPSS 3.67%
Last modified
CVE-2020-9839 is a high-severity vulnerability rated 7/10 on the CVSS scale. A race condition was addressed with improved state handling. This issue is fixed in iOS 13.5 and iPadOS 13.5, macOS Catalina 10.15.5, tvOS 13.4.5, watchOS 6.2.5. EPSS estimates a 3.67% chance of exploitation in the next 30 days.
Description
A race condition was addressed with improved state handling. This issue is fixed in iOS 13.5 and iPadOS 13.5, macOS Catalina 10.15.5, tvOS 13.4.5, watchOS 6.2.5. An application may be able to gain elevated privileges.
Metrics
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apple | Ipados | < 13.5 |
| Apple | Iphone Os | < 13.5 |
| Apple | Mac Os X | < 10.15.5 |
| Apple | Tvos | < 13.4.5 |
| Apple | Watchos | < 6.2.5 |
References
- https://support.apple.com/HT211168Vendor Advisory
- https://support.apple.com/HT211170Vendor Advisory
- https://support.apple.com/HT211171Vendor Advisory
- https://support.apple.com/HT211175Vendor Advisory
- https://support.apple.com/HT211168Vendor Advisory
- https://support.apple.com/HT211170Vendor Advisory
- https://support.apple.com/HT211171Vendor Advisory
- https://support.apple.com/HT211175Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-9839?
A race condition was addressed with improved state handling. This issue is fixed in iOS 13.5 and iPadOS 13.5, macOS Catalina 10.15.5, tvOS 13.4.5, watchOS 6.2.5. An application may be able to gain elevated privileges.
How severe is CVE-2020-9839?
CVE-2020-9839 has a CVSS score of 7/10 (HIGH severity). The EPSS model estimates a 3.67% probability of exploitation in the next 30 days.
How do I fix CVE-2020-9839?
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-2020-9839?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST