CVE-2026-21121 Privilege escalation in Samsung Mobile Devices
Medium 6.9
Published
Updated
Check this codebase for CVE-2026-21121 and fix it if it is affected.
What it is: CVE-2026-21121 is a medium-severity vulnerability in Samsung Mobile Devices, published on 12 Oct 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-2026-21121 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-2026-21121/ (Markdown: https://insights.sbomify.com/CVE-2026-21121/index.md)
Local attackers can exploit improper permission handling in CmcCore to access privileged APIs on Samsung mobile devices.
- 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-2026-21121?
CVE-2026-21121 is a medium-severity vulnerability in Samsung Mobile Devices, published on 12 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper handling of insufficient permission in CmcCore prior to SMR Oct-2026 Release 1 allows local attackers to use the privileged APIs.
Weakness: CWE-280
Which versions are affected by CVE-2026-21121?
How do I fix CVE-2026-21121?
No fix has been published for CVE-2026-21121 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-21121 being exploited?
There is no known exploitation of CVE-2026-21121 in the wild and no public exploit code.
Sources
Also known as GHSA-r848-gvm6-pwpr.