CVE-2020-9977
MEDIUMCVSS 5.5/10EPSS 0.91%
Last modified
CVE-2020-9977 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A validation issue existed in the entitlement verification. This issue was addressed with improved validation of the process entitlement. EPSS estimates a 0.91% chance of exploitation in the next 30 days.
Description
A validation issue existed in the entitlement verification. This issue was addressed with improved validation of the process entitlement. This issue is fixed in macOS Big Sur 11.0.1, iOS 14.0 and iPadOS 14.0. A malicious application may be able to determine a user's open tabs in Safari.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apple | Ipados | < 14.2 |
| Apple | Iphone Os | < 14.2 |
| Apple | Mac Os X | < 11.0.1 |
References
- http://seclists.org/fulldisclosure/2020/Dec/32Mailing List, Third Party Advisory
- https://support.apple.com/en-us/HT211850Vendor Advisory
- https://support.apple.com/en-us/HT211931Vendor Advisory
- http://seclists.org/fulldisclosure/2020/Dec/32Mailing List, Third Party Advisory
- https://support.apple.com/en-us/HT211850Vendor Advisory
- https://support.apple.com/en-us/HT211931Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-9977?
A validation issue existed in the entitlement verification. This issue was addressed with improved validation of the process entitlement. This issue is fixed in macOS Big Sur 11.0.1, iOS 14.0 and iPadOS 14.0. A malicious application may be able to determine a user's open tabs in Safari.
How severe is CVE-2020-9977?
CVE-2020-9977 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.91% probability of exploitation in the next 30 days.
How do I fix CVE-2020-9977?
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-2020-9977?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST