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CVE-2021-20172

26
FAUCET Score

CVE-2021-20172 is a local privilege escalation vulnerability affecting all known versions of the Netgear Genie Installer for macOS. The installer insecurely handles certain files, allowing a local attacker to overwrite them and gain root privileges. This vulnerability has a CVSS score of 7.8 (High) due to its low attack complexity and high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:netgear:genie_installer:-:*:*:*:*:macos:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
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
0.29%
Probability of exploitation in next 30 days
EPSS Percentile
21.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0029 is in the 57th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 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 (3)

giteavendor investigatingvia llm_extracted
meterspherevendor investigatingvia llm_extracted
qnapvendor investigatingvia llm_extracted

Vendor Advisories (3)

giteallm-gitea-5c49c022f02a6370MEDIUM

Netgear Genie MacOS Installer Privilege Escalation

Dec 30, 2021
qnapllm-qnap-548b97ab770fa18fMEDIUM

Netgear Genie MacOS Installer Privilege Escalation

Dec 30, 2021
meterspherellm-metersphere-e767c77f8f71e856MEDIUM

Netgear Genie MacOS Installer Privilege Escalation

Dec 30, 2021

References

tenable.com / security/research/tra-2021-56
ExploitThird Party Advisory