How severe is CVE-2020-3837?

CVE-2020-3837 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-3837 being actively exploited?

Yes. CVE-2020-3837 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-06-27, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2020-3837?

CVE-2020-3837 primarily affects Apple Ipados. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-3837?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2020-3837 have an EU (EUVD) identifier?

Yes. CVE-2020-3837 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-25102. It is also flagged as exploited in the EUVD (since 2022-06-27).

When was CVE-2020-3837 published?

CVE-2020-3837 was published on 2020-02-27 and last updated on 2026-06-17.

CVE-2020-3837

CVE-2020-3837 is a high-severity vulnerability in Apple Ipados with a CVSS 3.x base score of 7.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-06-27). The underlying weakness is classified as CWE-787.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 9.3
EPSS exploit prediction: 16% (97th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2022-06-27)
EU (EUVD) id: EUVD-2020-25102
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2022-06-27)
Weakness: CWE-787
Affected product: Apple Ipados
Published: 2020-02-27
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2020-3837?: 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.
How severe is CVE-2020-3837?: CVE-2020-3837 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-3837 being actively exploited?: Yes. CVE-2020-3837 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-06-27, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2020-3837?: CVE-2020-3837 primarily affects Apple Ipados. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-3837?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2020-3837 have an EU (EUVD) identifier?: Yes. CVE-2020-3837 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-25102. It is also flagged as exploited in the EUVD (since 2022-06-27).
When was CVE-2020-3837 published?: CVE-2020-3837 was published on 2020-02-27 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*

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