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CVE-2026-6923— Nuvoton - CWE-1300: Improper Protection of Physical Side Channels

Quick assessment

Affected
Nuvoton NPCT7xx
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.

Nuvoton NPCT7xx是中国台湾Nuvoton公司的一系列面向可信计算与平台安全管理的TPM安全控制器。 Nuvoton NPCT7xx存在安全漏洞，该漏洞源于侧信道攻击，可能导致提取椭圆曲线Diffie-Hellman密钥。

CVSS 3.8 · Low EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System

Affected Version Matrix 1

VendorProduct Version RangeStatus
Nuvoton NPCT7xx all versions below 7.2.4.0 affected
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I. Basic Information for CVE-2026-6923

Vulnerability Information
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Vulnerability Title
Nuvoton - CWE-1300: Improper Protection of Physical Side Channels
Source: CVE Program / CVE List V5
Vulnerability Description
A side-channel attack, which requires a physical presence to the TPM, can lead to extraction of an Elliptic Curve Diffie-Hellman (ECDH) key.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1300
Source: CVE Program / CVE List V5
Vulnerability Title
Nuvoton NPCT7xx 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nuvoton NPCT7xx是中国台湾Nuvoton公司的一系列面向可信计算与平台安全管理的TPM安全控制器。 Nuvoton NPCT7xx存在安全漏洞，该漏洞源于侧信道攻击，可能导致提取椭圆曲线Diffie-Hellman密钥。
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
Nuvoton NPCT7xx all versions below 7.2.4.0 -

II. Public POCs for CVE-2026-6923

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III. Intelligence Information for CVE-2026-6923

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IV. Related Vulnerabilities

Same vendor: Nuvoton
Same weakness: CWE-1300

V. Comments for CVE-2026-6923

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