CVE-2025-21066: Out-of-bounds read in the SPI decoder in Samsung Notes prior to version 4.4.30.63 allows local attackers to access out-of-bounds memory.
CVE-2025-21066 · Severity: medium · CVSS 4 · Published 2025-10-10
Out-of-bounds read in the SPI decoder in Samsung Notes prior to version 4.4.30.63 allows local attackers to access out-of-bounds memory.
No. Junglewise Threat Intelligence has no report of CVE-2025-21066 being exploited in the wild.
How severe is CVE-2025-21066?
Medium severity, with a CVSS score of 4, published 10 October 2025.
Which products and versions are affected?
Samsung Notes. The advisory does not name versions.
Is there a fix for CVE-2025-21066?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2025-21066?
Check whether you run Samsung Notes. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.