Overview
Apple iOS, iPadOS, and watchOS Mail contains a memory corruption vulnerability that may allow heap corruption when processing a maliciously crafted mail message.
https://nvd.nist.gov/vuln/detail/CVE-2020-9819
Key Details
| Property | Value |
|---|---|
| CVE ID | CVE-2020-9819 |
| Vendor / Product | Apple — iOS, iPadOS, and watchOS |
| NVD Published | 2020-06-09 |
| NVD Last Modified | 2025-10-23 |
| CVSS 3.1 Score | 4.3 |
| CVSS 3.1 Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L |
| Severity | MEDIUM |
| CWE | CWE-787 |
| CISA KEV Added | 2021-11-03 |
| CISA KEV Deadline | 2022-05-03 |
| Known Ransomware Use | No |
CVSS 3.1 Breakdown
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Required Action
CISA BOD 22-01 Deadline: 2022-05-03.
Apply updates per vendor instructions.
Timeline
| Date | Event |
|---|---|
| 2021-11-03 | Added to CISA Known Exploited Vulnerabilities catalog |
| 2022-05-03 | CISA BOD 22-01 remediation deadline |
References
| Resource | Type |
|---|---|
| NVD — CVE-2020-9819 | Vulnerability Database |
| CISA KEV Catalog Entry | US Government |