How severe is CVE-2020-9934?

CVE-2020-9934 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-9934 being actively exploited?

Yes. CVE-2020-9934 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-09-08, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2020-9934?

CVE-2020-9934 primarily affects Apple Ipados. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-9934?

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-2020-9934 have an EU (EUVD) identifier?

Yes. CVE-2020-9934 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-30713. It is also flagged as exploited in the EUVD (since 2022-09-08).

When was CVE-2020-9934 published?

CVE-2020-9934 was published on 2020-10-16 and last updated on 2026-06-17.

CVE-2020-9934

CVE-2020-9934 is a medium-severity vulnerability in Apple Ipados with a CVSS 3.x base score of 5.5. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-09-08).

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 2.1
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2022-09-08)
EU (EUVD) id: EUVD-2020-30713
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2022-09-08)
Affected product: Apple Ipados
Published: 2020-10-16
Last modified: 2026-06-17

Description

An issue existed in the handling of environment variables. This issue was addressed with improved validation. This issue is fixed in iOS 13.6 and iPadOS 13.6, macOS Catalina 10.15.6. A local user may be able to view sensitive user information.

Frequently asked questions

What is CVE-2020-9934?: An issue existed in the handling of environment variables. This issue was addressed with improved validation. This issue is fixed in iOS 13.6 and iPadOS 13.6, macOS Catalina 10.15.6. A local user may be able to view sensitive user information.
How severe is CVE-2020-9934?: CVE-2020-9934 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-9934 being actively exploited?: Yes. CVE-2020-9934 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-09-08, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2020-9934?: CVE-2020-9934 primarily affects Apple Ipados. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-9934?: 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-2020-9934 have an EU (EUVD) identifier?: Yes. CVE-2020-9934 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2020-30713. It is also flagged as exploited in the EUVD (since 2022-09-08).
When was CVE-2020-9934 published?: CVE-2020-9934 was published on 2020-10-16 and last updated on 2026-06-17.

References

Affected products (3)

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

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