CVE-2026-6923 Nuvoton - CWE-1300: Improper Protection of Physical Side Channels
Low 3.8
Published
Updated
Check this codebase for CVE-2026-6923 and fix it if it is affected.
What it is: CVE-2026-6923 is a low-severity vulnerability in Nuvoton NPCT7xx, published on 14 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-6923 in the wild and no public exploit code.
Affected product: Nuvoton NPCT7xx. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2026-6923/ (Markdown: https://insights.sbomify.com/CVE-2026-6923/index.md)
An attacker with physical access to the TPM can extract ECDH keys via side-channel attacks, compromising cryptographic security.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-6923?
CVE-2026-6923 is a low-severity vulnerability in Nuvoton NPCT7xx, published on 14 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-1300
Which versions are affected by CVE-2026-6923?
How do I fix CVE-2026-6923?
No fix has been published for CVE-2026-6923 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-6923 being exploited?
There is no known exploitation of CVE-2026-6923 in the wild and no public exploit code.
Sources
Also known as GHSA-j7g5-cj58-4v5f.