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Known exploited vulnerability

CVE-2020-9934

mediumCVSS 3.1 5.5In CISA KEVEPSS 3.2%Published · Apple

The short answer

CVE-2020-9934 affects Apple iOS and is rated medium (CVSS 5.5). CISA added it to the Known Exploited Vulnerabilities catalog on 2022-09-08: attackers are using it, so patch it first.

What it is

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.

Severity

5.5 medium

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploited (CISA KEV)

Yes, since Sep 8, 2022

Federal due date Sep 29, 2022

EPSS, next 30 days

3.2%

Higher than 88% of scored CVEs

How it can be exploited

Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

What CISA says to do

Apply updates per vendor instructions.

Affected products

iOS, macOS. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2020-9934 being exploited?

Yes. CISA added CVE-2020-9934 to its Known Exploited Vulnerabilities catalog on 2022-09-08, with a federal remediation due date of 2022-09-29.

How do I fix CVE-2020-9934?

CISA's required action: Apply updates per vendor instructions.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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