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CVE-2020-9934

Apple iOS, iPadOS, and macOS Input Validation

5.5 MEDIUMActively exploited (CISA KEV)EPSS 3.21%
  1. Published16 Oct 2020
  2. Added to CISA KEV8 Sept 2022
  3. Remediation due29 Sept 2022
Actively exploited (CISA KEV)

Apple iOS, iPadOS, and macOS contain an unspecified vulnerability involving input validation which can allow a local attacker to view sensitive user information.

Added to KEV: 8 Sept 2022Federal remediation due: 29 Sept 2022

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.

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products

Apple iPadOS< 13.6
Apple iPhone OS< 13.6
Apple Mac OS X< 10.15.6

Remediation

Fixed in
Apple iPadOS≥ 13.6
Apple iPhone OS≥ 13.6
Apple Mac OS X≥ 10.15.6

References

Frequently asked

Is CVE-2020-9934 being actively exploited?

Yes. CVE-2020-9934 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 8 Sept 2022.

How severe is CVE-2020-9934?

CVE-2020-9934 has a CVSS 3.1 base score of 5.5, rated medium. EPSS estimates a 3.21% probability of exploitation.

Which products are affected by CVE-2020-9934?

Affected products include Apple iPadOS, Apple iPhone OS, Apple Mac OS X.

How do I fix CVE-2020-9934?

Upgrade affected software to a fixed version, for example Apple iPadOS 13.6, Apple iPhone OS 13.6, Apple Mac OS X 10.15.6 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2020-9934 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.