CVE-2020-9934

5.5 MEDIUM 3% exploit odds exploited in the wild Fix listed Other OS & kernel

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.

At a glance

Exploitability: Can be exploited locally on the machine with a low-privilege account. High risk of data exposure.
In the wild: CISA lists this as exploited in real attacks. Treat as urgent.
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2020-03-02 00:00 UTC ReservedThe CVE id was reserved by its CNA
2020-10-16 17:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2022-09-08 Exploited in the wildAdded to CISA's Known Exploited Vulnerabilities list
2022-09-29 Remediation deadlineCISA's due date for federal agencies to fix it
2026-06-17 03:28 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: yes, CISA lists it. This puts it above everything that is not.
Exploit odds: 3.2% in the next 30 days (EPSS).
Severity: 5.5 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2020-10-16 17:15 UTC
Last modified: 2026-06-17 03:28 UTC
Added to CISA KEV: 2022-09-08
Exploit probability: 3.2% · EPSS, next 30 days
Record status: Analyzed

Affected

Apple Ipados < 13.6
Apple Iphone Os < 13.6
Apple Mac Os X < 10.15.6

Attack profile CVSS 3.1 · 5.5

Attack vector: Local
Complexity: Low
Privileges needed: Low
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: None
Availability: None

Raw vector

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

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2020-9934.md and follow it. Check whether this project is affected by CVE-2020-9934. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record