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CVE-2020-9974

20
FAUCET Score

CVE-2020-9974 is a logic issue affecting macOS, iOS, iPadOS, tvOS, and watchOS that could allow a malicious application to determine kernel memory layout. This vulnerability has a CVSS score of 5.5 (Medium), indicating a local attack vector with low complexity, requiring user interaction, and resulting in high confidentiality impact. While the potential for kernel memory layout disclosure is significant, there is no evidence of active exploitation, public exploit code, or notable community discussion surrounding this CVE. Apple addressed this issue with improved state management in macOS Big Sur 11.0.1, iOS 14.2, iPadOS 14.2, tvOS 14.2, and watchOS 7.1.

Impacted Technologies

VendorProductVersion(s)CPE
< 14.2CPE matchmatch criteria
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
< 14.2CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
< 11.0.1CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
< 14.2CPE matchmatch criteria
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
< 7.1CPE matchmatch criteria
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*

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
1.20%
Probability of exploitation in next 30 days
EPSS Percentile
64.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0120 is in the 76th 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/26
Mailing ListThird Party Advisory
seclists.org / fulldisclosure/2020/Dec/32
Mailing ListThird Party Advisory
support.apple.com / en-us/HT211928
Vendor Advisory
support.apple.com / en-us/HT211929
Vendor Advisory
support.apple.com / en-us/HT211930
Vendor Advisory
support.apple.com / en-us/HT211931
Vendor Advisory
support.apple.com / kb/HT212011
Vendor Advisory