Is CVE-2021-3519 actively exploited?

No active exploitation of CVE-2021-3519 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-3519 be exploited remotely?

No. CVE-2021-3519 requires physical access to exploit.

What is the CVSS score of CVE-2021-3519?

CVE-2021-3519 has a CVSS score of 6.8 (MEDIUM).

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MEDIUM

CVE-2021-3519

CWE-287Published: November 12, 2021· Updated: Jun 17, 2026

6.8

CVSS v3.1

Official Description

A vulnerability was reported in some Lenovo Desktop models that could allow unauthorized access to the boot menu, when the "BIOS Password At Boot Device List" BIOS setting is Yes.

NVD Source

Technical Analysis

CVE-2021-3519 requires local access, meaning attackers must already have a foothold on the target system.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 6.8.

From a weakness classification perspective (CWE-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorPhysical

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Affected Vendors & Products

Lenovo118 product(s)

ideacentre c5-14mb05 firmwareideacentre c5-14mb05ideacentre 3-07imb05 firmwareideacentre 3-07imb05ideacentre 5-14imb05 firmwareideacentre 5-14imb05ideacentre 5-14iob6 firmwareideacentre 5-14iob6ideacentre creator 5-14iob6 firmwareideacentre creator 5-14iob6ideacentre g5-14imb05 firmwareideacentre g5-14imb05+106

Microsoft1 product(s)

windows 10

Source: NVD CPE · 119 total CPE entries