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TI-2025-40747 Aliases CVE-2025-66265GHSA-9cqc-hhcp-cf94

Insecure permissions in configuration directory (C:\\usr)

Priority LOW 29CWE-269Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Privilege escalation
Confidentiality · integrity · availability
Low · High · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-269.

Summary

CMService.exe creates the C:\\usr directory and subdirectories with insecure permissions, granting write access to all authenticated users. This allows attackers to replace configuration files (such as snmp.conf) or hijack DLLs to escalate privileges.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00122 1st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MegaTec TaiwanClientMate6.2.2—No fix listedCNA
  • ClientMate VendorMegaTec Taiwan Affected 6.2.2 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-66265
  2. 2026-10-03 Alias added: GHSA-9cqc-hhcp-cf94

References

Other 1

  • TI-2025-40748 Insecure SYSTEM Service Permissions in UPSilon2000V6.0 (RupsMon.exe) leading to trivial Local Privilege Escalation CVSS 4.0CRITICAL 9.3
  • TI-2025-40746 Unquoted Service path in UPSilon2000V6.0 SYSTEM privilege service CVSS 4.0HIGH 7.2
  • TI-2025-40749 Unquoted Service Path in UPSilon2000V6.0(RupsMon and USBMate) running as SYSTEM CVSS 4.0HIGH 7.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences