How severe is CVE-2026-12780?

CVE-2026-12780 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-2026-12780 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-2026-12780?

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-2026-12780 have an EU (EUVD) identifier?

Yes. CVE-2026-12780 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38145.

When was CVE-2026-12780 published?

CVE-2026-12780 was published on 2026-06-21 and last updated on 2026-06-22.

CVE-2026-12780

CVE-2026-12780 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-2026-38145
Weakness: CWE-266
Published: 2026-06-21
Last modified: 2026-06-22

Description

A vulnerability was determined in AOMEI Backupper up to 8.3.0. Impacted is an unknown function in the library amwrtdrv.sys of the component Kernel Driver. Executing a manipulation can lead to improper access controls. The attack needs to be launched locally. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2026-12780?: A vulnerability was determined in AOMEI Backupper up to 8.3.0. Impacted is an unknown function in the library amwrtdrv.sys of the component Kernel Driver. Executing a manipulation can lead to improper access controls. The attack needs to be launched locally. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2026-12780?: CVE-2026-12780 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-2026-12780 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-2026-12780?: 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-2026-12780 have an EU (EUVD) identifier?: Yes. CVE-2026-12780 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38145.
When was CVE-2026-12780 published?: CVE-2026-12780 was published on 2026-06-21 and last updated on 2026-06-22.

References

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