How severe is CVE-2026-30332?

CVE-2026-30332 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-30332 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-30332?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-30332 have an EU (EUVD) identifier?

Yes. CVE-2026-30332 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18350.

When was CVE-2026-30332 published?

CVE-2026-30332 was published on 2026-04-02 and last updated on 2026-06-17.

CVE-2026-30332

CVE-2026-30332 is a high-severity vulnerability with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-367.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-18350
Weakness: CWE-367
Published: 2026-04-02
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-30332?: 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.
How severe is CVE-2026-30332?: CVE-2026-30332 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-30332 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-30332?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-30332 have an EU (EUVD) identifier?: Yes. CVE-2026-30332 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18350.
When was CVE-2026-30332 published?: CVE-2026-30332 was published on 2026-04-02 and last updated on 2026-06-17.

References

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