Exploited CVEs / Apple / CVE-2020-9859
CVE-2020-9859
Apple Multiple Products Code Execution Vulnerability. Exploitation in the wild is confirmed by CISA, not predicted. Federal agencies were required to remediate by 2022-05-03 (that deadline has passed); treat that date as the outer bound for your own environment. The fix is in the vendor advisory: Apple security releases, linked below.
Risk summary
Actively exploited Apple Multiple Products vulnerability, High severity, CVSS 7.8. Added to the CISA KEV catalog 2021-11-03.
Senserva AI Opinion for CVE-2020-9859
An unspecified flaw across iOS, iPadOS, macOS, watchOS, and tvOS lets an application execute code with kernel privileges, and it saw real-world exploitation. For an enterprise the risk reads two ways: a malware escalation path, and a way for users to jailbreak managed devices out from under MDM controls. Exposure today means a device that has not updated in years.
Do this: Run a jailbreak and OS-version compliance check across managed Apple devices and block noncompliant ones from corporate apps.
AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for CVE-2020-9859
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Updated August 14, 2026. Data refreshed on every build from MSRC, CISA KEV, and FIRST EPSS.
Full tracking and change history for CVE-2020-9859
- Published
- 2021-11-03
- Last revised
- 2021-11-03
- Changes tracked
- 1
Published and last-revised dates are authoritative, from Microsoft MSRC (or the CISA KEV date-added). Senserva additionally records day-to-day changes from 2026-07-07, refreshed several times a day; the change count reflects that forward-only tracking.
- 2021-11-03 added to the CISA KEV catalog by CISA
- 2026-07-17 CVSS 0.0 to 7.8; EPSS first scored at 0.8%
Recorded by Senserva on the dates shown, from CISA KEV and FIRST EPSS. This is what moved and when, which neither the vendor advisory nor NVD publishes.
CISA required action
Federal (BOD 22-01) remediation due date: 2022-05-03 (past due).
Apply updates per vendor instructions.
Official fix for CVE-2020-9859
The authoritative fix and affected-version list are published by the vendor. Find the Multiple Products advisory on Apple security releases.
Common questions about CVE-2020-9859
Is CVE-2020-9859 actively exploited?
Yes. CVE-2020-9859 was added to the CISA Known Exploited Vulnerabilities (KEV) catalog on 2021-11-03, which means exploitation in the wild has been confirmed, not predicted. Its EPSS 30-day exploitation probability is <1%.
What is the CISA deadline and required action for CVE-2020-9859?
CISA set the federal (BOD 22-01) remediation due date at 2022-05-03, which has passed; treat any unremediated system as overdue. The verbatim required action: Apply updates per vendor instructions.
What fixes CVE-2020-9859?
The authoritative fix is in the vendor advisory: see Apple security releases for the patched Multiple Products versions and any workarounds. KEV listing makes this a fix-first item: patch it ahead of higher-CVSS issues nobody is exploiting.
Can I ask my own AI about CVE-2020-9859?
Yes. This page includes a free, ready-to-paste AI prompt containing CVE-2020-9859's key facts: severity, CVSS, EPSS, the KEV date, the CISA due date, and the required action. Copy it into Claude, ChatGPT, or Copilot; the data is refreshed twice a day (5 AM and 3 PM US Central).
Scope and sources
- More exploited Apple CVEs
- CVE-2025-31277CVE-2025-43520CVE-2025-43510CVE-2021-30952CVE-2023-43000CVE-2023-41974CVE-2026-20700CVE-2025-43529
All Apple exploited CVEs on one page: Apple vulnerabilities actively exploited.
- Authoritative references
Every actively exploited CVE, searchable with due dates and CSV export: the exploited-CVE tracker. The newest additions: exploited this week.