Samsung Blockchain Keystore 1.3.12.1/1.3.13.5/1.3.16 out-of-bounds write

CVSS Meta Temp Score
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CTI Interest Score
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4.9$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Samsung Blockchain Keystore. Impacted is an unknown function. Such manipulation leads to out-of-bounds write. This vulnerability is documented as CVE-2025-20900. The attack needs to be performed locally. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Samsung Blockchain Keystore. It has been rated as critical. Affected by this issue is an unknown functionality. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Out-of-bounds write in Blockchain Keystore prior to version 1.3.16.5 allows local privileged attackers to write out-of-bounds memory.

The advisory is shared for download at security.samsungmobile.com. This vulnerability is handled as CVE-2025-20900 since 11/06/2024. The exploitation is known to be easy. The attack needs to be approached locally. The exploitation needs additional levels of successful authentication. There are neither technical details nor an exploit publicly available.

Upgrading to version 1.3.16.5 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 4.9

VulDB Base Score: 4.2
VulDB Temp Score: 4.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.4
NVD Vector: 🔍

CNA Base Score: 6.3
CNA Vector (SamsungMobile): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Blockchain Keystore 1.3.16.5

Timelineinfo

11/06/2024 🔍
02/04/2025 +90 days 🔍
02/04/2025 +0 days 🔍
07/17/2025 +163 days 🔍

Sourcesinfo

Vendor: samsung.com

Advisory: security.samsungmobile.com
Status: Confirmed

CVE: CVE-2025-20900 (🔍)
GCVE (CVE): GCVE-0-2025-20900
GCVE (VulDB): GCVE-100-294596

Entryinfo

Created: 02/04/2025 09:50
Updated: 07/17/2025 07:03
Changes: 02/04/2025 09:50 (29), 02/04/2025 09:53 (34), 07/17/2025 07:03 (12)
Complete: 🔍
Committer: mitr
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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