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Back to active CVEs
Medium · CVSS 6.8CVE-2026-90891

ASRock｜ASRock Polychrome SYNC/RGB software utility - Improper Access ControlCVE-2026-90891

Answer in brief

CVE-2026-90891 records a Medium severity (CVSS 6.8) vulnerability in ASRock｜ASRock Polychrome SYNC/RGB software utility - Improper Access Control. The current sources do not mark it as known exploited. The current feed maps ASRock/ASRock Polychrome SYNC/RGB for MB (generic), ASRock/ASRock Polychrome SYNC/RGB for MB (generic), ASRock/ASRock Polychrome SYNC/RGB for VGA (generic), ASRock/ASRock Polychrome SYNC/RGB for VGA (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 14, 2026Updated Sep 18, 2026Source checked Oct 29, 2026First seen by HOL Sep 14, 2026Material review Sep 18, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 6.8
Exploitation
Not marked as known exploited
Affected software
4 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 6.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps ASRock/ASRock Polychrome SYNC/RGB for MB (generic), ASRock/ASRock Polychrome SYNC/RGB for MB (generic), ASRock/ASRock Polychrome SYNC/RGB for VGA (generic), ASRock/ASRock Polychrome SYNC/RGB for VGA (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
ASRock/ASRock Polychrome SYNC/RGB for MBgeneric>=0 <=1.0.118Not reported
ASRock/ASRock Polychrome SYNC/RGB for MBgeneric0Not reported
ASRock/ASRock Polychrome SYNC/RGB for VGAgeneric>=0 <=2.0.219Not reported
ASRock/ASRock Polychrome SYNC/RGB for VGAgeneric0Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for ASRock/ASRock Polychrome SYNC/RGB for MB, ASRock/ASRock Polychrome SYNC/RGB for MB, ASRock/ASRock Polychrome SYNC/RGB for VGA.
  2. 2Review the reported fix. Source-reported 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

Evidence timeline and material changes

  1. Published upstream

    Sep 14, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 18, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 14, 2026

Sources and claim methodology

  • Source referencetwcert.org.tw
  • Source referencetwcert.org.tw
Upstream source description

ASRock Polychrome SYNC/RGB software utility developed by ASRock Inc. has an Improper Access Control vulnerability. Authenticated local attackers can send a specially crafted IOCTL request to cause the driver to write to improperly restricted I/O ports, resulting in a forced operating system reboot.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-1256
Source
CVE List V5
Source checked
Oct 29, 2026
References
2 linked sources
Open source record