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CVE-2020-9817

26
FAUCET Score

CVE-2020-9817 describes a permissions issue in macOS Catalina 10.15.5 and earlier, allowing a malicious application to gain root privileges. This vulnerability carries a high CVSS score of 7.8, indicating a significant risk where an attacker could achieve full system compromise with low attack complexity and no prior privileges, requiring user interaction. While no public exploit code is available on platforms like Metasploit or ExploitDB, and it's not listed in CISA's KEV catalog, there has been some community discussion, including a Reddit post detailing a technical advisory.

Impacted Technologies

VendorProductVersion(s)CPE
>= 10.13, < 10.13.6CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
>= 10.14, < 10.14.6CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
>= 10.15, < 10.15.5CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
10.13.6CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:10.13.6:-:*:*:*:*:*:*
10.13.6CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2018-002:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.06%
Probability of exploitation in next 30 days
EPSS Percentile
61.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0106 is in the 58th percentile among its peer group of 11,621 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

applevendor investigatingvia nvd_reference
View patch

References

support.apple.com / HT211170
Release NotesVendor Advisory
tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-mac-priv-esc-VqST2nrT
Third Party Advisory