CVE-2026-30332

7.5 highEPSS 0.2%

High (7.5). EPSS 0.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.5 high

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

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 6% of CVEs (scores of 2026-10-31)
CWE: CWE-367
Published: 2026-04-02
Modified: 2026-07-24
Record from: the NVD, synced 2026-10-19

References

https://github.com/B1tBreaker/CVE-2026-30332
https://github.com/balena-io/etcher/issues/4500
https://www.balena.io/security

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