CVE-2020-25082

Severity: low (CVSS 3.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-08-10 · updated 2026-06-17
Weakness: CWE-203

Description

An attacker with physical access to Nuvoton Trusted Platform Module (NPCT75x 7.2.x before 7.2.2.0) could extract an Elliptic Curve Cryptography (ECC) private key via a side-channel attack against ECDSA, because of an Observable Timing Discrepancy.

Affected products

Nuvoton Npct75X Firmware: from 7.2.0 before 7.2.2.0 — fixed in 7.2.2.0

How to fix

Upgrade to a fixed version: Nuvoton Npct75X Firmware 7.2.2.0. Check the vendor advisory for mitigations.

References

https://www.nuvoton.com/support/product-related-information/security-advisories/sa-002/
https://www.nuvoton.com/support/product-related-information/security-advisories/sa-002/

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