CVE-2026-90890

ASRock｜ASRock Polychrome SYNC/RGB software utility - Untrusted Pointer Dereference

Published Sep 14, 2026 CVSS 4.0 · 6.8 Medium EPSS < 1% KEV · Not listed

Description

ASRock Polychrome SYNC/RGB software utility developed by ASRock Inc. has an Untrusted Pointer Dereference vulnerability. Authenticated local attackers can send a specially crafted IOCTL request to cause the driver to dereference an unvalidated pointer, resulting in an operating system crash.

Analysis

Technical impact

The vulnerability is an Untrusted Pointer Dereference in ASRock's Polychrome SYNC/RGB driver. Authenticated local users can craft a specific IOCTL request that forces the driver to dereference an unvalidated pointer, causing an operating system crash. This results in a denial‑of‑service condition that may bring down the system or graphics subsystem, but it does not directly grant code execution or privilege escalation, according to the description.

Affected Systems

ASRock Polychrome SYNC/RGB for Motherboard version 1.0.118 and earlier, and ASRock Polychrome SYNC/RGB for VGA version 2.0.219 and earlier. The issue affects both the motherboard and VGA implementations of the utility, causing the associated kernel driver to crash when a malicious IOCTL is processed.

Risk and Exploitability

The CVSS score of 6.8 indicates moderate severity. The exploit requires local authenticated access and an ability to issue IOCTL calls against the driver. EPSS data is not available, and the vulnerability is not listed in the CISA KEV catalog, suggesting a lower likelihood of widespread exploitation today. If an attacker can obtain local privileges—for example, through credential compromise or local physical access—they could trigger the crash and disrupt system availability.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

ASRock

ASRock Polychrome SYNC/RGB for MB

unaffected

Version	Status	Constraints
`0`	affected	≤ 1.0.118

ASRock

ASRock Polychrome SYNC/RGB for VGA

unaffected

Version	Status	Constraints
`0`	affected	≤ 2.0.219

No data.

Vendor Product Versions

Asrock

Asrock Polychrome Sync/rgb For Mb

Version	Status	Scheme	Platform
`[0,1.0.118]`	affected	generic	—

Asrock

Asrock Polychrome Sync/rgb For Vga

Version	Status	Scheme	Platform
`[0,2.0.219]`	affected	generic	—

Remediation

Vendor Solution

Update ASRock Polychrome SYNC/RGB for MB to a version later than 1.0.118 Update ASRock Polychrome SYNC/RGB for VGA to a version later than 2.0.219

OpenCVE Recommended Actions

Update ASRock Polychrome SYNC/RGB for MB to a version later than 1.0.118.
Update ASRock Polychrome SYNC/RGB for VGA to a version later than 2.0.219.
Disable or uninstall the Polychrome SYNC/RGB software utility to prevent the vulnerable driver from loading until a patched version is available.
Limit local user privileges to reduce the likelihood that an authenticated local attacker can send malicious IOCTL requests.

Generated by OpenCVE AI on September 15, 2026 at 14:31 UTC.

Tracking

Advisories

No advisories available

Metrics

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.136% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://www.twcert.org.tw/en/cp-139-11204-6b1c6-2.html
https://www.twcert.org.tw/tw/cp-132-11205-f6677-1.html

History

Sep 17, 2026 8:30 PM First appearance in the feed. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Asrock Asrock asrock Polychrome Sync/rgb For Mb Asrock asrock Polychrome Sync/rgb For Vga
Vendors & Products		Asrock Asrock asrock Polychrome Sync/rgb For Mb Asrock asrock Polychrome Sync/rgb For Vga

Sep 14, 2026 12:30 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Sep 14, 2026 10:45 AM Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		ASRock Polychrome SYNC/RGB software utility developed by ASRock Inc. has an Untrusted Pointer Dereference vulnerability. Authenticated local attackers can send a specially crafted IOCTL request to cause the driver to dereference an unvalidated pointer, resulting in an operating system crash.
Title		ASRock｜ASRock Polychrome SYNC/RGB software utility - Untrusted Pointer Dereference
Weaknesses		CWE-822
References		https://www.twcert.org.tw/en/cp-139-11204-6b1c6-2.html https://www.twcert.org.tw/tw/cp-132-11205-f6677-1.html
Metrics		cvssV3_1 `{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}` cvssV4_0 `{'score': 6.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}`