CVE-2021-1806
HIGHCVSS 7/10EPSS 0.90%
Last modified
CVE-2021-1806 is a high-severity vulnerability rated 7/10 on the CVSS scale. A race condition was addressed with additional validation. This issue is fixed in macOS Big Sur 11.2.1, macOS Catalina 10.15.7 Supplemental Update, macOS Mojave 10.14.6 Security Update 2021-002. EPSS estimates a 0.90% chance of exploitation in the next 30 days.
Description
A race condition was addressed with additional validation. This issue is fixed in macOS Big Sur 11.2.1, macOS Catalina 10.15.7 Supplemental Update, macOS Mojave 10.14.6 Security Update 2021-002. An application may be able to execute arbitrary code with kernel privileges.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apple | Mac Os X | >= 10.14, < 10.14.6 |
| Apple | Mac Os X | >= 10.15, < 10.15.7 |
| Apple | Mac Os X | 10.14.6 |
| Apple | Mac Os X | 10.15.7 |
| Apple | Macos | >= 11.0, < 11.2.1 |
References
- https://seclists.org/fulldisclosure/2021/Apr/54Mailing List, Third Party Advisory
- https://support.apple.com/en-us/HT212177Vendor Advisory
- https://support.apple.com/kb/HT212327Vendor Advisory
- https://seclists.org/fulldisclosure/2021/Apr/54Mailing List, Third Party Advisory
- https://support.apple.com/en-us/HT212177Vendor Advisory
- https://support.apple.com/kb/HT212327Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-1806?
A race condition was addressed with additional validation. This issue is fixed in macOS Big Sur 11.2.1, macOS Catalina 10.15.7 Supplemental Update, macOS Mojave 10.14.6 Security Update 2021-002. An application may be able to execute arbitrary code with kernel privileges.
How severe is CVE-2021-1806?
CVE-2021-1806 has a CVSS score of 7/10 (HIGH severity). The EPSS model estimates a 0.90% probability of exploitation in the next 30 days.
How do I fix CVE-2021-1806?
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-2021-1806?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST