CVE-2020-3837
Apple Multiple Products Memory Corruption Vulnerability
- High 7.8
- Exploited: added to CISA KEV 27 Jun 2022
Description
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.
Key facts
- Published
- 27 Feb 2020
- Last changed
- 21 Oct 2025
- Assigned by
- apple
- KEV added
- 27 Jun 2022
- KEV fix due
- 18 Jul 2022
- EPSS
- 14.774% likely to be exploited in the next 30 days, higher than 96.735% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: no; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 7.8CVSS 3.1, Highfrom CISA (ADP container)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
What to do
- Apply updates per vendor instructions.CISA KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Apple | iOS |
|
| Apple | macOS |
|
| Apple | tvOS |
|
| Apple | watchOS |
|
Timeline
- 27 Feb 2020 Published
- 27 Jun 2022 CVE-2020-3837 added to CISA KEV
- 27 Jun 2022 Added to the CISA KEV catalogue