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CVE-2021-41392

31
FAUCET Score

CVE-2021-41392 describes a critical remote command execution vulnerability in Boost Note versions up to 0.22.0. An attacker can exploit this by sending a specially crafted IPC message to the exposed ipcRenderer interface, which then invokes the dangerous openExternal Electron API. This vulnerability carries a CVSS score of 9.8 (Critical), indicating a network-based attack with low complexity, requiring no user interaction, and leading to complete compromise of confidentiality, integrity, and availability. While no active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB) has been observed, and community discussion is minimal, the high severity warrants immediate attention for affected Boost Note users.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.22.0CPE matchmatch criteria
cpe:2.3:a:boostnote:boostnote:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.76%
Probability of exploitation in next 30 days
EPSS Percentile
84.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0276 is in the 75th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 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

Remediation records are not available for this CVE.

References

github.com / BoostIO/BoostNote-App/issues/856
ExploitIssue TrackingThird Party Advisory