dbutildrv2.sys

Dell firmware-update driver (the other dbutil)

From Dell Technologies

Part of the Dell family

Status

On a known-vulnerable list

Known variants

2 distinct hashes

Field notes

dbutildrv2.sys is a Dell driver from the same dbutil family as the more famous dbutil_2_3.sys (CVE-2021-21551). Used by Dell's firmware and BIOS update utilities; common on Dell systems where Dell Command Update or similar tools were installed.

Dell published advisories for the affected drivers and a remediation utility. As with dbutil_2_3, removal involves running Dell's cleanup utility or the manual steps in their security advisory; many systems still have the older signed binaries on disk.

What the record shows

dbutildrv2.sys is listed as a known-vulnerable driver on the public LOLDrivers project. 2 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 Dell family. See the whole family →

dbutil_2_3.sys wdtkernel.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. “dbutildrv2.sys.” Vera Field Guide (Driver). The Vera Project. https://www.veraproject.xyz/field-guide/drivers/dbutildrv2-sys