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CVE-2020-9934

69
FAUCET Score

CVE-2020-9934 is a local privilege escalation vulnerability affecting Apple's iOS, iPadOS, and macOS operating systems, stemming from improper handling of environment variables. This medium-severity flaw (CVSS 5.5) allows a local attacker to view sensitive user information with low attack complexity and no user interaction required. The vulnerability is actively exploited in the wild, as indicated by its presence in CISA's KEV catalog and Metasploit modules, and has garnered significant community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 13.6CPE matchmatch criteria
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
< 13.6CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
< 10.15.6CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.21%
Probability of exploitation in next 30 days
EPSS Percentile
86.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
Added to KEV · Sep 8, 2022
This CVE's current EPSS score of 0.0321 is in the 99th percentile among its peer group of 15,940 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

applevendor investigatingvia nvd_reference
View patch

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
support.apple.com / HT211288
Release NotesVendor Advisory
support.apple.com / HT211289
Release NotesVendor Advisory