CVEs / CVE-2020-9859
CVE-2020-9859: Apple Multiple Products Code Execution Vulnerability
- Known exploited in the CISA KEV catalog since 3 Nov 2021
- high 7.8 CVSS 3.1 (NVD)
- EPSS 0.82% chance of exploitation in the next 30 days, higher than 57% of CVEs (30 Oct 2026)
- Last changed at its sources
Are you affected? Check your servers with Stackurity: it lists the software on each server and the vulnerabilities to fix first.
Check your servers with Stackurity Already using Stackurity? Search for CVE-2020-9859
Summary
Apple iOS, iPadOS, macOS, watchOS, and tvOS contain an unspecified vulnerability that may allow an application to execute code with kernel privileges.
Description
A memory consumption issue was addressed with improved memory handling. This issue is fixed in iOS 13.5.1 and iPadOS 13.5.1, macOS Catalina 10.15.5 Supplemental Update, tvOS 13.4.6, watchOS 6.2.6. An application may be able to execute arbitrary code with kernel privileges.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Apple iOS | from unspecified, before iOS 13.5.1 and iPadOS 13.5.1 | iOS 13.5.1 and iPadOS 13.5.1 |
| Apple macOS | from unspecified, before macOS Catalina 10.15.5 Supplemental Update | macOS Catalina 10.15.5 Supplemental Update |
| Apple tvOS | from unspecified, before tvOS 13.4.6 | tvOS 13.4.6 |
| Apple watchOS | from unspecified, before watchOS 6.2.6 | watchOS 6.2.6 |
Exploitation
| In CISA KEV since | 3 Nov 2021 |
|---|---|
| Due date for US federal agencies | 3 May 2022 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply updates per vendor instructions. |
Severity
| CVSS 3.1 | 7.8 highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-415 |
References
- CVE-2020-9859 on NVD
- CVE-2020-9859 in the CISA KEV catalog
- https://support.apple.com/HT211214 Release Notes, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-9859 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.