CVE-2026-21084 Information disclosure in SmartThings
Medium 6.9
Published
Updated
Check this codebase for CVE-2026-21084 and fix it if it is affected.
What it is: CVE-2026-21084 is a medium-severity vulnerability in Samsung Mobile SmartThings, published on 10 Aug 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-2026-21084 in the wild and no public exploit code.
Affected product: Samsung Mobile SmartThings. 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-2026-21084/ (Markdown: https://insights.sbomify.com/CVE-2026-21084/index.md)
Local attackers can access sensitive information in the SmartThings mobile application due to improper access control.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-21084?
CVE-2026-21084 is a medium-severity vulnerability in Samsung Mobile SmartThings, published on 10 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper access control in SmartThings prior to version 1.8.47.24 allows local attackers to access sensitive information.
Weakness: CWE-284
Which versions are affected by CVE-2026-21084?
How do I fix CVE-2026-21084?
No fix has been published for CVE-2026-21084 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-21084 being exploited?
There is no known exploitation of CVE-2026-21084 in the wild and no public exploit code.
Sources
Also known as GHSA-3gp9-88w5-2g6f.