CVE-2021-1841
HIGHCVSS 7.8/10EPSS 1.25%
Last modified
CVE-2021-1841 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A malicious application may be able to execute arbitrary code with kernel privileges. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina. EPSS estimates a 1.25% chance of exploitation in the next 30 days.
Description
A malicious application may be able to execute arbitrary code with kernel privileges. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina. An out-of-bounds write issue was addressed with improved bounds checking.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apple | Mac Os X | 10.14 |
| Apple | Mac Os X | 10.14.0 |
| Apple | Mac Os X | 10.14.1 |
| Apple | Mac Os X | 10.14.2 |
| Apple | Mac Os X | 10.14.3 |
| Apple | Mac Os X | 10.14.4 |
| Apple | Mac Os X | 10.14.5 |
| Apple | Mac Os X | 10.14.6 |
| Apple | Mac Os X | 10.15 |
| Apple | Mac Os X | 10.15.1 |
| Apple | Mac Os X | 10.15.2 |
| Apple | Mac Os X | 10.15.3 |
| Apple | Mac Os X | 10.15.4 |
| Apple | Mac Os X | 10.15.5 |
| Apple | Mac Os X | 10.15.6 |
| Apple | Mac Os X | 10.15.7 |
| Apple | Macos | >= 11.0, < 11.3 |
References
- https://support.apple.com/en-us/HT212325Vendor Advisory
- https://support.apple.com/en-us/HT212326Vendor Advisory
- https://support.apple.com/en-us/HT212325Vendor Advisory
- https://support.apple.com/en-us/HT212326Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-1841?
A malicious application may be able to execute arbitrary code with kernel privileges. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina. An out-of-bounds write issue was addressed with improved bounds checking.
How severe is CVE-2021-1841?
CVE-2021-1841 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.25% probability of exploitation in the next 30 days.
How do I fix CVE-2021-1841?
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.
Related CVEs from 2021
- CVE-2021-1835This issue was addressed with improved checks. This issue is…4.6
- CVE-2021-1836A logic issue was addressed with improved restrictions. This…5.5
- CVE-2021-1837A certificate validation issue was addressed. This issue is …5.3
- CVE-2021-1838This issue was addressed with improved checks. This issue is…7.8
- CVE-2021-1839The issue was addressed with improved permissions logic. Thi…7.8
- CVE-2021-1840A memory corruption issue was addressed with improved valida…7.8
- CVE-2021-1842Rejected reason: This candidate is unused by its CNA.
- CVE-2021-1843This issue was addressed with improved checks. This issue is…7.8
- CVE-2021-1844A memory corruption issue was addressed with improved valida…8.8
- CVE-2021-1846Processing a maliciously crafted audio file may disclose res…5.5
- CVE-2021-1847A memory corruption issue was addressed with improved valida…7.8
- CVE-2021-1848The issue was addressed with improved UI handling. This issu…5.5
Are you affected by CVE-2021-1841?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST