Privilege escalation in Aomei Backupper
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (4.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 5th percentile — 4.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Aomei Backupper — versions 8.0, 8.1, 8.2
Weakness classification (CWE)
References
- vuldb.com/vuln/372521 (vdb-entry)
- vuldb.com/vuln/372521/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-12780 (third-party-advisory)
- vuldb.com/submit/835609 (third-party-advisory)
- winslow1984.com/books/cve-collection/page/aomei-backupper-830-kernel-driver-amw… (exploit)
Frequently asked questions
- What is CVE-2026-12780?
- CVE-2026-12780 is a high-severity vulnerability in Aomei Backupper, classified under Incorrect Privilege Assignment. CVSS score: 7.8/10. Published 2026-06-21.
- How severe is CVE-2026-12780?
- High severity. CVSS v3 base score is 7.8 out of 10.