Local privilege escalation via MMIO integer overflow
Published Aug 31, 2026 · Updated Sep 1, 2026
Integer overflow in Dragon Center 2.0.155 and earlier allows local users to gain elevated execution through its MMIO write path. MmioWritePath in NTIOLib_X64.sys uses attacker-controlled count and elementSize values without rejecting arithmetic wraparound before an MMIO write. A low-privileged local account is required; successful exploitation crosses the driver privilege boundary and grants control of the host.
Summary
What happened
Integer overflow in Dragon Center 2.0.155 and earlier allows local users to gain elevated execution through its MMIO write path. MmioWritePath in NTIOLib_X64.sys uses attacker-controlled count and elementSize values without rejecting arithmetic wraparound before an MMIO write. A low-privileged local account is required; successful exploitation crosses the driver privilege boundary and grants control of the host.
The record
- CVE
- CVE-2026-82908
- Published
- Aug 31, 2026
- Updated
- Sep 1, 2026
- Vendor
- Micro-Star International Co., Ltd.
- Product
- Dragon Center
- Classifications
- CWE-190, CWE-189, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 31, 2026CVE publishedPublication date reported by the CVE source.
- Sep 1, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=2.0.155
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- MmioWritePath proof-of-concept exploitproof of concept · unverified
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Technologies
Your stack
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Your stack
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