Vulnerability record
CVE-2026-129255
The short answer
CVE-2026-129255 affects CoolerMaster MASTERPLUS+ and is rated critical (CVSS 9.3). It is not in CISA's KEV catalog; EPSS puts the chance of exploitation in the next 30 days at 0.15%.
What it is
A vulnerability was identified in CoolerMaster MASTERPLUS+ 1.9.6. This affects the function sub_11504 in the library WinRing0x64.sys of the component Device Driver. The manipulation of the argument PhysicalAddress leads to incorrect default permissions. The attack can only be performed from a local environment. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
9.3 critical
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/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
Exploited (CISA KEV)
Not listed
CISA lists confirmed exploitation only
EPSS, next 30 days
0.15%
Higher than 4% of scored CVEs
How it can be exploited
- Attack vector
- Local
- Attack complexity
- Low
- Attack requirements
- None
- Privileges required
- Low
- User interaction
- None
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Affected products
MASTERPLUS+. NVD's record lists the exact affected versions.
References
Questions
Is CVE-2026-129255 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog as of 2026-11-15. FIRST's EPSS estimates a 0.15% chance of exploitation in the next 30 days.
How do I fix CVE-2026-129255?
Follow the vendor advisory in the references below. NVD lists the affected versions under its configurations.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Deferred. The description is NVD's text, quoted as published.
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