CVE-2025-21018 Information disclosure in Blockchain Keystore

Medium 4.4 Published Updated

Local privileged attackers can read out-of-bounds memory in Samsung Blockchain Keystore, potentially exposing sensitive data.

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-2025-21018?

CVE-2025-21018 is a medium-severity vulnerability in Samsung Mobile Blockchain Keystore, published on 6 Aug 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Out-of-bounds read in Blockchain Keystore prior to version 1.3.17.2 allows local privileged attackers to read out-of-bounds memory.

Weakness: CWE-125

Which versions are affected by CVE-2025-21018?

It affects 1 product.

Products include Samsung Blockchain Keystore.

How do I fix CVE-2025-21018?

No fix has been published for CVE-2025-21018 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-21018 being exploited?

There is no known exploitation of CVE-2025-21018 in the wild and no public exploit code.

Sources

Also known as GHSA-8fr5-48m4-ccp8.

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