CVE-2019-8503
HIGHCVSS 8.8/10EPSS 1.78%
Last modified
CVE-2019-8503 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. A logic issue was addressed with improved validation. This issue is fixed in iOS 12.2, tvOS 12.2, Safari 12.1, iTunes 12.9.4 for Windows, iCloud for Windows 7.11. EPSS estimates a 1.78% chance of exploitation in the next 30 days.
Description
A logic issue was addressed with improved validation. This issue is fixed in iOS 12.2, tvOS 12.2, Safari 12.1, iTunes 12.9.4 for Windows, iCloud for Windows 7.11. A malicious website may be able to execute scripts in the context of another website.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apple | Icloud | < 7.11 |
| Apple | Itunes | < 12.9.4 |
| Apple | Safari | < 12.1 |
| Apple | Iphone Os | < 12.2 |
| Apple | Tvos | < 12.2 |
References
- https://support.apple.com/HT209599Vendor Advisory
- https://support.apple.com/HT209601Vendor Advisory
- https://support.apple.com/HT209603Vendor Advisory
- https://support.apple.com/HT209604Vendor Advisory
- https://support.apple.com/HT209605Vendor Advisory
- https://support.apple.com/HT209599Vendor Advisory
- https://support.apple.com/HT209601Vendor Advisory
- https://support.apple.com/HT209603Vendor Advisory
- https://support.apple.com/HT209604Vendor Advisory
- https://support.apple.com/HT209605Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2019-8503?
A logic issue was addressed with improved validation. This issue is fixed in iOS 12.2, tvOS 12.2, Safari 12.1, iTunes 12.9.4 for Windows, iCloud for Windows 7.11. A malicious website may be able to execute scripts in the context of another website.
How severe is CVE-2019-8503?
CVE-2019-8503 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.78% probability of exploitation in the next 30 days.
How do I fix CVE-2019-8503?
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-2019-8503?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST