CVE-2023-21477

HIGHNVD 7.95.5▼

7.9

Access of Memory Location After End of Buffer vulnerability in TIGERF trustlet prior to SMR Apr-2023 Release 1 allows local attackers to access protected data.

CVSS v3: 7.9
EG Score: 5.5(medium)
EPSS: 7.4%
KEV: Not listed

Published

September 3, 2025

Last Modified

January 28, 2026

References (1)

mobilehttps://security.samsungmobile.com/securityUpdate.smsb?year=2023&month=04

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-125Out-of-bounds Read

Data Freshness Timeline

(refreshed 16× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:15 UTCEPSS rescore
2026-06-08 14:15 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-04 13:11 UTCEPSS rescore
2026-06-04 13:11 UTCEPSS rescore
2026-06-02 20:12 UTCEPSS rescore
2026-06-02 20:12 UTCEPSS rescore
2026-06-02 20:12 UTCEPSS rescore
2026-06-01 13:51 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore

Frequently asked(5)

What is CVE-2023-21477?

CVE-2023-21477 is a high vulnerability published on September 3, 2025. Access of Memory Location After End of Buffer vulnerability in TIGERF trustlet prior to SMR Apr-2023 Release 1 allows local attackers to access protected data.

When was CVE-2023-21477 disclosed?

CVE-2023-21477 was first published in the National Vulnerability Database on September 3, 2025, with the most recent update on January 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-21477 actively exploited?

CVE-2023-21477 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 7.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-21477?

CVE-2023-21477 has a CVSS v3 base score of 7.9 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 5.5.

How do I remediate CVE-2023-21477?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-21477, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2023-21477

📅 Published

🔄 Last Modified

🔗 References (1)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-21477?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (1)

Frequently asked(5)

Related CVEs(same CWE)