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CVE-2020-9945

17
FAUCET Score

CVE-2020-9945 describes a URL spoofing vulnerability affecting macOS Big Sur and Safari, stemming from insufficient input validation. An attacker could exploit this by luring a user to a malicious website, leading to address bar spoofing and potentially deceiving the user about the true URL. Rated as Medium severity (CVSS 4.3), it requires user interaction (UI:R) and network access (AV:N) but has a low impact on integrity (I:L) and no impact on confidentiality or availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage, suggesting low current threat activity.

Impacted Technologies

VendorProductVersion(s)CPE
< 14.0.1CPE matchmatch criteria
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
< 11.0.1CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
< 11.0CPE match
cpe:2.3:a:apple:macos:*:*:*:*:*:*:*:*
< 14.0CPE match
cpe:2.3:a:apple:macos:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.16%
Probability of exploitation in next 30 days
EPSS Percentile
64.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0116 is in the 77th percentile among its peer group of 26,236 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 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/HT211931
Release NotesVendor Advisory
support.apple.com / en-us/HT211934
Release NotesVendor Advisory