CVE-2020-3837
KEVApple Multiple Products Memory Corruption Vulnerability
Description
Apple iOS, iPadOS, macOS, tvOS, and watchOS contain a memory corruption vulnerability that could allow an application to execute code with kernel privileges.
A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 13.3.1 and iPadOS 13.3.1, macOS Catalina 10.15.3, tvOS 13.3.1, watchOS 6.1.2. An application may be able to execute arbitrary code with kernel privileges.
CVSS 3.1 vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HPublishedFeb 27, 2020
Last modifiedJun 17, 2026
Added to KEVJun 27, 2022
Remediation dueJul 18, 2022
References
- support.apple.com/HT210918Release NotesVendor Advisory
- support.apple.com/HT210919Release NotesVendor Advisory
- support.apple.com/HT210920Release NotesVendor Advisory
- support.apple.com/HT210921Release NotesVendor Advisory
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3837US Government Resource
0 recent articles mention this CVE
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Risk assessment · High
Actively exploited. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 1562 days
- CVSS
- 7.8 HIGH
- EPSS (30-day exploit probability)
- 14.8% · top 3% of all CVEs
- Weakness
- CWE-787
Recommended actions
- 1.Apply updates per vendor instructions.
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.