7.8

CVE-2020-9859: Apple Multiple Products Code Execution Vulnerability

CVSS: 7.8v3.1HighKEVAnalyzed
Published 05-06-2020Last modified 21-10-2025
Open JSON

Vulnerability summary

CVE-2020-9859 is a high (CVSS 7.8) Double Free vulnerability in Apple Multiple Products. It is known to be exploited: CISA lists it, first on 03-11-2021. EPSS estimates a 0.83% chance of exploitation in the next 30 days, higher than 57% of scored vulnerabilities.

Overall risk
85/100
0100
Critical · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.83%
0%100%
Low · 0.00 pp in 30 days
KEVListedCISA
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 05-06-2020
    PublishedVulnerability first disclosed.
  2. 03-11-2021
    Added to CISA KEVApple Multiple Products Code Execution Vulnerability
  3. 03-05-2022
    CISA remediation dueApply updates per vendor instructions.
  4. 21-10-2025
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.83%

Chance of exploitation in the next 30 days

Percentile

57%

Versus all other CVEs

30-day change

0.00 pp

From 0.83% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.83%

Known exploited

Compare KEV catalogs
CISA KEVListed
Added
03-11-2021
Federal due date
03-05-2022

CISA required action

Apply updates per vendor instructions. nvd.nist.gov/vuln/detail/CVE-2020-9859

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Apple7 products
  • ios≥ unspecified, < iOS 13.5.1 and iPadOS 13.5.1
  • ipados< 13.5.1
  • iphone_os< 13.5.1
  • mac_os_x< 10.15.5
  • macos≥ unspecified, < macOS Catalina 10.15.5 Supplemental Update

1 vendor · 7 products

References

2 links