Is CVE-2023-21511 in the CISA KEV catalog?

No. CVE-2023-21511 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-21511?

CVE-2023-21511 has a CVSS v3 base score of 4.4 (MEDIUM).

What is the EPSS score for CVE-2023-21511?

CVE-2023-21511 has an EPSS score of 0.17% (7th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-21511?

Upgrade samsung blockchain keystore to 1.3.12.1 or later.

CVE & CISA-KEV Catalog

CVE-2023-21511

MEDIUM

4.4

CVSS v3

NVD

Description

Out-of-bounds Read vulnerability while processing CMD_COLDWALLET_BTC_SET_PRV_UTXO in bc_core trustlet from Samsung Blockchain Keystore prior to version 1.3.12.1 allows local attacker to read arbitrary memory.

CWE-125Out-of-bounds Read

How to fix

Remediation Available

samsung blockchain keystoreNVD

Affected:< 1.3.12.1Fixed in:1.3.12.1CVE-2023-21511derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

0.17%probability of exploitation in 30 days

7thpercentile

Low risk: more likely to be exploited than 7% of all known CVEs.

References

Vendor Advisory1

security.samsungmobile.com

Related Vulnerabilities

Other CWE-125 (Out-of-bounds Read) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0160	High	7.5	100%	KEV	Fix
CVE-2025-5777	High	7.5	100%	KEV + Ransom	Fix
CVE-2021-4034	High	7.8	95%	KEV	Fix
CVE-2023-21769	High	7.5	92%	-	Fix
CVE-2023-49285	High	8.6	89%	-	Fix
CVE-2020-8794	Critical	9.8	89%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.