CVE-2025-21070 Memory corruption in Samsung Notes
Local attackers can exploit an out-of-bounds write in the SPI decoder to potentially execute arbitrary code or escalate privileges.
- 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-2025-21070?
CVE-2025-21070 is a medium-severity memory corruption vulnerability in Samsung Notes, published on 10 Oct 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Out-of-bounds write in the SPI decoder in Samsung Notes prior to version 4.4.30.63 allows local attackers to write out-of-bounds memory.
Weakness: CWE-787
Which versions are affected by CVE-2025-21070?
It affects 1 product.
Products include Samsung Notes.
How do I fix CVE-2025-21070?
No fix has been published for CVE-2025-21070 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-21070 being exploited?
There is no known exploitation of CVE-2025-21070 in the wild and no public exploit code.
Other vulnerabilities in Samsung Notes
Sources
Also known as GHSA-j6r2-93fv-jqp9.