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Vulnerabilities

Vulnerability · CVE-2025-61155

Uncontrolled Resource Consumption

Published Jan 29, 2026 · catalog updated Jan 29, 2026 · Hotta Studio GameDriverX64.sys

Patch now

CVE-2025-61155 is in the CISA known-exploited catalog. Confirm Hotta Studio GameDriverX64.sys against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
Unknown—
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
0.28%
Remediation
Remediation guidance
Affected products
stated GameDriverX64.sys · vendor Hotta Studio GameDriverX64.sys

The GameDriverX64.sys kernel-mode anti-cheat driver (v7.23.4.7 and earlier) contains an access control vulnerability in one of its IOCTL handlers. A user-mode process can open a handle to the driver device and send specially crafted IOCTL requests. These requests are executed in kernel-mode context without proper authentication or access validation, allowing the attacker to terminate arbitrary processes, including critical system and security services, without requiring administrative privileges.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • stated GameDriverX64.sys<= 23.4.7
  • vendor Hotta Studio GameDriverX64.sysversion unspecified

How to fix CVE-2025-61155

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-61155 is in the CISA known-exploited catalog. Confirm Hotta Studio GameDriverX64.sys against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with GameDriverX64.sys <= 23.4.7. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 0.28%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 29, 2026 · VulnCheck KEV

    Detected

    The GameDriverX64.sys kernel-mode anti-cheat driver (v7.23.4.7 and earlier) contains an access control vulnerability in one of its IOCTL handlers. A user-mode process can open a handle to the driver device and send specially crafted IOCTL requests. These requests are executed in kernel-mode context without proper authentication or access validation, allowing the attacker to terminate arbitrary pro

  2. Jan 29, 2026 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Sources

  • CVE.orgVulnerability recordCVE-2025-61155

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-61155

    30-day exploitation probability 0.3%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-2025-61155

    The GameDriverX64.sys kernel-mode anti-cheat driver (v7.23.4.7 and earlier) contains an access control vulnerability in one of its IOCTL handlers. A user-mode process can open a handle to the driver device and send specially crafted IOCTL requests. These requests are executed in

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.