CVE-2026-12778

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.16% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 5.9% of scored records. A rank, not a probability.

NVD base score

7.1 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Deferred. NVD last modified this record on 2026-06-22.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-06-21 05:00Z2 MO AGO

Last updated

2026-06-22 13:33Z2 MO AGO

Reserved

2026-06-20

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

High (CVSS 8.5)

CNA CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

Weaknesses

• CWE-266Incorrect Privilege AssignmentBase
• CWE-284Improper Access ControlPillar

Data version

5.2

Document digest

1f6290c4f78ecc4b70d8a205f4b4a60e412f43a08ce3cf780319c890669c9ad9

• vuldb.comVDB-372519 | AOMEI Partition Assistant Kernel Driver ampa10.sys access controlhttps://vuldb.com/vuln/372519vdb-entry
• vuldb.comVDB-372519 | CTI Indicators (IOB, IOC, TTP, IOA)https://vuldb.com/vuln/372519/ctisignaturepermissions-required
• vuldb.comCVE-2026-12778 | CVE Analysis and Reporthttps://vuldb.com/cve/CVE-2026-12778third-party-advisory
• vuldb.comSubmit #835607 | AOMEI AOMEI Partition Assistant Kernel Driver ampa10.sys 10.10.1 Local Privilege Escapationhttps://vuldb.com/submit/835607third-party-advisory
• winslow1984.comhttps://winslow1984.com/books/cve-collection/page/aomei-partition-assistant-10101-kernel-driver-ampa10sys-local-privilege-escalationexploit