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CVE-2020-9934

Exploited in the wild. In CISA KEV since 2022‑09‑08. Fixed versions are out.

CVSS 3.15.5MediumEPSS percentile88th3.2% chance in 30 daysCISA KEVListedsince 2022-09-08, due 2022-09-29
Public exploit: 1 sourceFix3 products3 fixed builds listed below

Published Updated Sources: CVE.org, NVD, BDU

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

  • Apple macOSAffected: ≥ unspecified, < macOS Catalina 10.15.6Upgrade to: macOS Catalina 10.15.6Stated by: CVE record
  • Apple iOSAffected: ≥ unspecified, < iOS 13.6 and iPadOS 13.6Upgrade to: iOS 13.6 and iPadOS 13.6Stated by: CVE record
  • Apple IpadosAffected: < 13.6Upgrade to: 13.6Stated by: NVD

Versions as the sources state them. Full version matrix after sign-in

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Coverage timeline

0 publishers

  1. Added to CISA KEV catalog

    ·CISA KEV

Sourced from public security reporting — each date is when it was published, not when it happened.

What it is

From the CVE record

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.

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS88th
Public exploit
CISA KEV
CISA KEV

Listed as exploited in the wild since 2022-09-08.

US federal agencies must remediate by 2022-09-29.

Apply updates per vendor instructions.
Public exploits

1 source with a proof of concept or module.

Exploit links, PoCs and Metasploit modules after sign-in
EPSS

3.2% chance of exploitation activity in the next 30 days, which ranks it in the 88th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Attention now

Rising.

Lifecycle

The patch came 134 days before any public exploit.

  1. Public exploit / PoCsource: github-poc
  2. Patch availablerecord updated
  3. Added to CISA KEV
  4. Publishedweakness classified

Affected products

And 3 more affected products. See all after sign-in

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

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

Scored 5.5 by NVD.

How it is reached

  • Attack Vector LocalRequires local access to the vulnerable system (e.g. local login, malicious file)
  • Attack Complexity LowNo special conditions — the attack can be reliably reproduced
  • Privileges Required LowRequires basic user-level privileges
  • User Interaction NoneNo user interaction needed — fully automated exploitation

Scope

  • Scope UnchangedImpact is limited to the vulnerable component itself

Impact if exploited

  • Confidentiality HighTotal information disclosure — all data in the component is compromised
  • Integrity NoneNo integrity impact
  • Availability NoneNo availability impact

Weaknesses

Sources

References in the record

And 5 more references. See all after sign-in

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We'll flag the next CVE, public exploit or patch for macOS, not every advisory. This one: actively exploited.