CVE-2026-2815 Incorrect use of the PUF key for user key generation in EFR32xG27 results in predictable keys
High 8.4
Published
Updated
Check this codebase for CVE-2026-2815 and fix it if it is affected.
What it is: CVE-2026-2815 is a high-severity vulnerability in Silicon Labs SiSDK, published on 25 Jun 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-2026-2815 in the wild and no public exploit code.
Affected product: Silicon Labs SiSDK. 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-2026-2815/ (Markdown: https://insights.sbomify.com/CVE-2026-2815/index.md)
Attackers can predict user keys due to incorrect PUF usage in EFR32xG27, compromising security for Silicon Labs SiSDK users.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-2815?
CVE-2026-2815 is a high-severity vulnerability in Silicon Labs SiSDK, published on 25 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Incorrect use of the PUF key for user key generation in EFR32xG27 results in predictable keys
Weakness: CWE-339
Which versions are affected by CVE-2026-2815?
How do I fix CVE-2026-2815?
No fix has been published for CVE-2026-2815 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-2815 being exploited?
There is no known exploitation of CVE-2026-2815 in the wild and no public exploit code.
Sources
Also known as GHSA-f2cj-j66g-55wj.