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CVE-2021-3453

Quick assessment

Affected
Lenovo BIOS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Lenovo Desktops（联想台式机）和Lenovo ThinkPad都是中国联想（Lenovo）公司的产品。Lenovo Desktops是台式电脑Lenovo ThinkPad是一个便携式计算机。 多款 Lenovo 设备存在安全漏洞，该漏洞源于设备的BIOS modules没有被 Intel Boot Guard 保护，攻击者在物理访问的前提下可通过该漏洞向 SPI flash storage 中写入数据。以下产品及版本受到影响：Lenovo Notebook, ThinkPad、 Lenov

CVSS 6.8 · Medium EPSS 0.24% · P13
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I. Basic Information for CVE-2021-3453

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Some Lenovo Notebook, ThinkPad, and Lenovo Desktop systems have BIOS modules unprotected by Intel Boot Guard that could allow an attacker with physical access the ability to write to the SPI flash storage.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
保护机制失效
Source: CVE Program / CVE List V5
Vulnerability Title
多款 Lenovo 设备 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Lenovo Desktops（联想台式机）和Lenovo ThinkPad都是中国联想（Lenovo）公司的产品。Lenovo Desktops是台式电脑Lenovo ThinkPad是一个便携式计算机。 多款 Lenovo 设备存在安全漏洞，该漏洞源于设备的BIOS modules没有被 Intel Boot Guard 保护，攻击者在物理访问的前提下可通过该漏洞向 SPI flash storage 中写入数据。以下产品及版本受到影响：Lenovo Notebook, ThinkPad、 Lenov
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Lenovo BIOS various -

II. Public POCs for CVE-2021-3453

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III. Intelligence Information for CVE-2021-3453

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Vendor Advisories for CVE-2021-3453 (1)

Same Patch Batch · Lenovo · 2021-07-16 · 4 CVEs total

CVE-2021-3550 7.8 HIGH Lenovo Pcmanager 代码问题漏洞
CVE-2021-3452 6.7 MEDIUM Lenovo Bios 授权问题漏洞
CVE-2021-3614 6.4 MEDIUM Lenovo BIOS 安全漏洞

IV. Related Vulnerabilities

Same product: BIOS
Same vendor: Lenovo
Same weakness: CWE-693

V. Comments for CVE-2021-3453

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