CVE-2026-21046 Race condition in Samsung Mobile Devices
High 8.4
Published
Updated
Check this codebase for CVE-2026-21046 and fix it if it is affected.
What it is: CVE-2026-21046 is a high-severity vulnerability in Samsung Mobile Devices, published on 10 Jul 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-2026-21046 in the wild and no public exploit code.
Affected product: Samsung Mobile Devices. 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-2026-21046/ (Markdown: https://insights.sbomify.com/CVE-2026-21046/index.md)
Local privileged attackers can execute arbitrary code via a race condition in the fabricKeymaster trustlet on Samsung mobile devices.
- 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-2026-21046?
CVE-2026-21046 is a high-severity vulnerability in Samsung Mobile Devices, published on 10 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Time-of-check time-of-use race condition in fabricKeymaster trustlet prior to SMR Jul-2026 Release 1 allows local privileged attackers to execute arbitrary code.
Which versions are affected by CVE-2026-21046?
How do I fix CVE-2026-21046?
No fix has been published for CVE-2026-21046 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-21046 being exploited?
There is no known exploitation of CVE-2026-21046 in the wild and no public exploit code.
Sources
Also known as GHSA-g963-gfxf-m962.