CVE-2021-1829
CRITICALCVSS 9.8/10EPSS 2.20%
Last modified
CVE-2021-1829 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A type confusion issue was addressed with improved state handling. This issue is fixed in macOS Big Sur 11.3. EPSS estimates a 2.20% chance of exploitation in the next 30 days.
Description
A type confusion issue was addressed with improved state handling. This issue is fixed in macOS Big Sur 11.3. An application may be able to execute arbitrary code with kernel privileges.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apple | Macos | >= 11.0, < 11.3 |
References
- https://support.apple.com/en-us/HT212325Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212325Release Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-1829?
A type confusion issue was addressed with improved state handling. This issue is fixed in macOS Big Sur 11.3. An application may be able to execute arbitrary code with kernel privileges.
How severe is CVE-2021-1829?
CVE-2021-1829 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.20% probability of exploitation in the next 30 days.
How do I fix CVE-2021-1829?
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-2021-1829?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST