ntiolib.sys

MSI hardware-access utility driver

From Micro-Star International (MSI)

Part of the MSI family

Status

On a known-vulnerable list

Known variants

46 distinct hashes

Field notes

NTIOLib.sys is another MSI utility driver, related to low-level I/O access for MSI's tooling, and is often paired with RTCore64.sys on machines running MSI's older software. It is on the LOLDrivers list for the same reason: an IOCTL surface that hands out broad hardware access to user-mode callers.

Commonly present on systems where MSI software is or has been installed. Updating to the current MSI Center release replaces the older driver.

What the record shows

ntiolib.sys is listed as a known-vulnerable driver on the public LOLDrivers project. 46 distinct binary hashes matching this filename are on record, meaning multiple versions of the file have been observed.

What this means, plainly

Presence is not proof of misuse. Driver files on the LOLDrivers list commonly ship with legitimate hardware tools, gaming software, or vendor utilities. Their presence is recorded as evidence on a record. It is never treated as a verdict about a person.

Related drivers

Other drivers in the MSI family. See the whole family →

rtcore64.sys msio64.sys msio32.sys

Source

Status data comes from the public LOLDrivers project, a community-curated registry of drivers known to be vulnerable or malicious. The snapshot Vera uses was refreshed July 10, 2026. CVE links go to the NIST National Vulnerability Database.

In plain words

Kernel driver BYOVD Ring 0 Code-signing certificate Certificate revocation The full glossary →

Cite this entry

Vera Project. “ntiolib.sys.” Vera Field Guide (Driver). The Vera Project. https://www.veraproject.xyz/field-guide/drivers/ntiolib-sys