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CVE-2020-9963

19
FAUCET Score

CVE-2020-9963 is a medium-severity vulnerability affecting Apple's macOS Big Sur, iOS, and iPadOS, allowing a malicious application to determine the existence of files on a user's device due to improper handling of icon caches. With a CVSS score of 5.5, this local vulnerability requires user interaction (UI:R) to exploit, but could lead to high confidentiality impact (C:H). There is no evidence of active exploitation, public exploit code, or significant community discussion, making it a low-priority threat at this time. The issue was patched in macOS Big Sur 11.0.1, iOS 14.0, and iPadOS 14.0.

Impacted Technologies

VendorProductVersion(s)CPE
< 14.0CPE matchmatch criteria
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
< 14.0CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
< 11.0.1CPE 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:N/UI:R/S:U/C:H/I:N/A:N

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
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
0.99%
Probability of exploitation in next 30 days
EPSS Percentile
58.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0099 is in the 69th percentile among its peer group of 5,765 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

No media coverage found for this CVE.

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

seclists.org / fulldisclosure/2020/Dec/32
Mailing ListThird Party Advisory
support.apple.com / en-us/HT211850
Release NotesVendor Advisory
support.apple.com / en-us/HT211931
Release NotesVendor Advisory