Nuvoton - CWE-1300: Improper Protection of Physical Side Channels

published 2026-05-14 5 mo ago modified 2026-10-26 13 d ago also EUVD-2026-30328

cvss: 3.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.1%; EPSS 0.1% chance of exploitation in 30 days, percentile 1%
public exploits: 0; none known

A side-channel attack, which requires a physical presence to the TPM, can lead to extraction of an Elliptic Curve Diffie-Hellman (ECDH) key.

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 5 mo ago (2026-05-14)

Exploit prediction

0.12% chance of exploitation in the next 30 days, higher than 1% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	3.8	CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N

Affected products

Nuvoton NPCT7xx

Classification

Weakness

CWE-1300 Improper Protection of Physical Side Channels

References

gov.il /en/departments/dynamiccollectors/cve_advisories_listing?skip=0

Sources

CVE List CVE-2026-6923
NVD CVE-2026-6923

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary