Little Orbit GameFirst Anti-Cheat up to 2025-07-07 Requests GFAC_Sys_x64.sys null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.69

Summaryinfo

A vulnerability, which was classified as problematic, was found in Little Orbit GameFirst Anti-Cheat up to 2025-07-07. This affects an unknown function in the library GFAC_Sys_x64.sys of the component Requests Handler. Such manipulation leads to null pointer dereference. This vulnerability is traded as CVE-2026-12166. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Little Orbit GameFirst Anti-Cheat up to 2025-07-07 and classified as critical. Affected by this issue is some unknown functionality in the library GFAC_Sys_x64.sys of the component Requests Handler. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. CVE summarizes:

A NULL pointer dereference vulnerability for driver `GFAC_Sys_x64.sys` in Little Orbit GFAC allows a local attacker to cause a denial of service via crafted requests that trigger a system crash.

This vulnerability is handled as CVE-2026-12166 since 06/12/2026. The exploitation is known to be easy. The attack may be launched remotely. There are known technical details, but no exploit is available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-41377). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 6.5
VulDB Temp Score: 6.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

06/12/2026 CVE reserved
07/02/2026 +20 days Advisory disclosed
07/02/2026 +0 days VulDB entry created
07/02/2026 +0 days VulDB entry last update

Sourcesinfo

Status: Not defined

CVE: CVE-2026-12166 (🔒)
GCVE (CVE): GCVE-0-2026-12166
GCVE (VulDB): GCVE-100-375944
EUVD: 🔒

Entryinfo

Created: 07/02/2026 17:37
Updated: 07/02/2026 21:47
Changes: 07/02/2026 17:37 (53), 07/02/2026 21:47 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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