A Time-of-Check to Time-of-Use (TOCTOU) race condition vulnerability in Balena Etcher for Windows prior to v2.1.4 allows attackers to escalate privileges and execute arbitrary code via replacing a legitimate script with a crafted payload during the flashing process.
History

Fri, 03 Apr 2026 10:15:00 +0000

Type Values Removed Values Added
Title Time‑of‑Check to Time‑of‑Use Race Condition in Balena Etcher Allows Privilege Escalation
First Time appeared Balena-io
Balena-io etcher
Vendors & Products Balena-io
Balena-io etcher

Thu, 02 Apr 2026 20:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-367
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 02 Apr 2026 16:00:00 +0000

Type Values Removed Values Added
Description A Time-of-Check to Time-of-Use (TOCTOU) race condition vulnerability in Balena Etcher for Windows prior to v2.1.4 allows attackers to escalate privileges and execute arbitrary code via replacing a legitimate script with a crafted payload during the flashing process.
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AC:H/AV:L/A:H/C:H/I:H/PR:L/S:C/UI:R'}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2026-04-02T00:00:00.000Z

Updated: 2026-04-02T17:26:30.031Z

Reserved: 2026-03-04T00:00:00.000Z

Link: CVE-2026-30332

cve-icon Vulnrichment

Updated: 2026-04-02T17:26:03.174Z

cve-icon NVD

Status : Received

Published: 2026-04-02T16:16:22.050

Modified: 2026-04-02T18:16:27.407

Link: CVE-2026-30332

cve-icon Redhat

No data.