---
title: "CVE-2020-9934: Apple iOS vulnerability | CubePath"
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…"
language: en
source: https://cubepath.com/security/cve/CVE-2020-9934
---

# CVE-2020-9934: Apple iOS vulnerability | CubePath

## 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.

Official description from the CVE record, published by apple. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2020-9934)

## Key data

### CVSS 3.1 Medium 5.5

Score published by CISA-ADP in the CVE record.

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

| Metric                 | Value     | What it means                                                                             |
| ---------------------- | --------- | ----------------------------------------------------------------------------------------- |
| Attack vector          | Local     | The attacker needs local access to the system, or to trick a user into running something. |
| Attack complexity      | Low       | No special conditions are needed. The attack can be repeated at will.                     |
| Privileges required    | Low       | A basic user account is needed.                                                           |
| User interaction       | None      | No action from any user is needed.                                                        |
| Scope                  | Unchanged | The impact stays within the vulnerable component.                                         |
| Confidentiality impact | High      | Serious or total effect on the secrecy of data.                                           |
| Integrity impact       | None      | No effect on the trustworthiness of data.                                                 |
| Availability impact    | None      | No effect on availability.                                                                |

CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at [first.org/cvss](https://www.first.org/cvss/) .

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.03208 (3.2% probability)

Percentile

88.3%

Scores of

Nov 10, 2026

Model

v2026.06.15

### CISA Known Exploited Vulnerabilities

This CVE is listed in the CISA KEV catalog.

Name in the catalog

Apple iOS, iPadOS, and macOS Input Validation Vulnerability

Added to the catalog

Sep 8, 2022

Federal due date

Sep 29, 2022

### CISA assessment as of Jan 29, 2025

Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA.

Exploitation

Recorded by CISA as active

Automatable

no

Technical impact

partial

## Affected products

Products listed in the CVE record, as the CNA published them.

- Apple iOS

  - affected: unspecified up to before iOS 13.6 and iPadOS 13.6
- Apple macOS

  - affected: unspecified up to before macOS Catalina 10.15.6

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [support.apple.com/HT211289](https://support.apple.com/HT211289)
- [support.apple.com/HT211288](https://support.apple.com/HT211288)

## Timeline

1. ID reserved Mar 2, 2020
2. Record published Oct 16, 2020
3. Added to CISA KEV Sep 8, 2022
4. Record last updated Oct 21, 2025

## Look up another CVE

## About CubePath

CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection.

[Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection)

Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:27 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)