CVE-2021-41392: static/main-preload.js in Boost Note through 0.22.0 allows remote command execution

Q: How do I fix CVE-2021-41392?

boostnote: upgrade to newer than 0.22.0. Exact commands for each OS are on this page.

Q: Is CVE-2021-41392 being exploited?

CVE-2021-41392 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-41392 affect?

CVE-2021-41392 affects boostnote. Severity is critical (CVSS 9.8). static/main-preload.js in Boost Note through 0.22.0 allows remote command execution. A remote attacker may send a crafted IPC message to the exposed vulnerable ipcRenderer IPC interface, which invokes the dangerous openExternal Electron API

Q: How urgent is CVE-2021-41392?

Priority 66/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2021-41392 is a critical-severity flaw (CVSS 9.8) affecting boostnote. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

static/main-preload.js in Boost Note through 0.22.0 allows remote command execution. A remote attacker may send a crafted IPC message to the exposed vulnerable ipcRenderer IPC interface, which invokes the dangerous openExternal Electron API.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.8% (top 14%)
CISA exploited list	No
Weakness	CWE-74
Published	2021-09-17
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: boostnote

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-09-17 22:15 UTCPublished CVE record published
2026-06-17 04:08 UTCUpdated Record last modified

boostnote boostnote UPGRADE

Affected: <= 0.22.0

Fixed in: newer than 0.22.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy boostnote || rpm -q boostnote || boostnote --version

2. UPGRADE to newer than 0.22.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade boostnote

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade boostnote

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-41392?

boostnote: upgrade to newer than 0.22.0. Exact commands for each OS are on this page.

Is CVE-2021-41392 being exploited?

CVE-2021-41392 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-41392 affect?

CVE-2021-41392 affects boostnote. Severity is critical (CVSS 9.8). static/main-preload.js in Boost Note through 0.22.0 allows remote command execution. A remote attacker may send a crafted IPC message to the exposed vulnerable ipcRenderer IPC interface, which invokes the dangerous openExternal Electron API

How urgent is CVE-2021-41392?

Priority 66/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Electron vulnerabilities

Related CVEs

CVE-2020-19924 MEDIUM 5.4 DOWNGRADE In Boostnote 0.12.1, exporting to PDF contains opportunities for XSS attacks.

References

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