CVE-2026-6387 PUBLISHED

Assigner: lenovo
Reserved: 15.04.2026 Published: 13.08.2026 Updated: 13.08.2026

A potential authentication bypass vulnerability was reported in Lenovo System Update that could allow a local authenticated user to execute arbitrary code with elevated privileges.

Metrics

CVSS 3.1
CVSS 4.0

CVSS Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 7.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Local	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	Present	Availability	High	Availability	None
Privileges Required	Low
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 7

Attack Vector	Local	Scope	Unchanged
Attack Complexity	High	Confidentiality Impact	High
Privileges Required	Low	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	Lenovo
Product	System Update
Versions	Default: unaffected affected from 0 to 5.08.04.85 (excl.)

Solutions

Update Lenovo System Update to version 5.08.04.85 or later.

Credits

Lenovo thanks sf0rn for reporting this vulnerability. finder

References

Problem Types

CWE-290: Authentication Bypass by Spoofing CWE