How severe is CVE-2026-12786?

CVE-2026-12786 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-12786 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-12786?

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-2026-12786 have an EU (EUVD) identifier?

Yes. CVE-2026-12786 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38150.

When was CVE-2026-12786 published?

CVE-2026-12786 was published on 2026-06-21 and last updated on 2026-06-22.

CVE-2026-12786

CVE-2026-12786 is a high-severity vulnerability with a CVSS 3.x base score of 7.8. 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-266.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 6.8
CVSS v4: 7.1
EPSS exploit prediction: 0% (2nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-38150
Weakness: CWE-266
Published: 2026-06-21
Last modified: 2026-06-22

Description

A vulnerability has been found in Ezbsystems UltraISO Premium Edition up to 9.76. Affected by this issue is some unknown functionality in the library bootpt64.sys of the component Kernel Driver. The manipulation leads to improper access controls. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2026-12786?: A vulnerability has been found in Ezbsystems UltraISO Premium Edition up to 9.76. Affected by this issue is some unknown functionality in the library bootpt64.sys of the component Kernel Driver. The manipulation leads to improper access controls. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2026-12786?: CVE-2026-12786 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-12786 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-12786?: 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-2026-12786 have an EU (EUVD) identifier?: Yes. CVE-2026-12786 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38150.
When was CVE-2026-12786 published?: CVE-2026-12786 was published on 2026-06-21 and last updated on 2026-06-22.

References

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