November 14, 2026

CVE Watchtower

CVE-2026-129255CoolerMaster MASTERPLUS+ Incorrect Default Permissions

NVD

Vulnerability Summary

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 Level
CRITICAL(9.3)
Published Date
Nov 14, 2026
Last Modified
Nov 14, 2026
Exploitation Status
No confirmed exploitation yet
Root Weakness (CWE)
CWE-276: Incorrect Default Permissions β†—
During installation, installed file permissions are set to allow anyone to modify those files.
CWE-266 β†—
See the MITRE CWE entry for the full definition of this weakness.
CVSS v4.0 Base Metrics — Score 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
Attack VectorLocal
Attack ComplexityLow
Attack RequirementsNone
Privileges RequiredLow
User InteractionNone
Confidentiality (Vulnerable System)High
Integrity (Vulnerable System)High
Availability (Vulnerable System)High
Confidentiality (Subsequent System)High
Integrity (Subsequent System)High
Availability (Subsequent System)High
Show CVSS v3.x metrics (score 8.8)
CVSS v3.1 Base Metrics — Score 8.8 (HIGH)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:X/RL:X/RC:C
Attack VectorLocal
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • CoolerMaster MASTERPLUS+ 1.9.6
Patched Versions
No patched version published yet
Until a fix ships, reduce exposure:
  • Restrict access to the affected service or interface to trusted networks.
  • Disable the affected feature if you do not need it.
  • Watch the vendor advisory for a firmware or software update.

What to do

Plan remediation soon. No exploitation is confirmed yet, but the severity is critical.

  1. Check whether you run CoolerMaster MASTERPLUS+ and which version.
  2. No patched version is listed yet. Limit access to the affected service to trusted networks, and disable the feature if you can.
  3. Subscribe to the vendor advisory so you learn when a fix ships.

Timeline

  • Nov 14, 2026Published
  • Nov 14, 2026Record last modified

Score, severity and exploitation changes are tracked from the day Watchtower started logging them.

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External References

Data last checked: Nov 14, 2026 13:06 UTC