CVE-2023-21480

HIGHNVD 8.57.8▼

8.5

Improper input validation vulnerability in CertByte prior to SMR Apr-2023 Release 1 allows local attackers to launch privileged activities.

CVSS v3: 8.5
EG Score: 7.8(medium)
EPSS: 2.3%
KEV: Not listed

Published

September 3, 2025

Last Modified

September 19, 2025

References (1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 39× 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.

2026-06-16 17:51 UTCEPSS rescore
2026-06-16 17:51 UTCEPSS rescore
2026-06-16 17:51 UTCEPSS rescore
2026-06-15 17:47 UTCEPSS rescore
2026-06-14 23:16 UTCEPSS rescore
2026-06-13 22:59 UTCEPSS rescore
2026-06-12 23:10 UTCEPSS rescore
2026-06-11 13:59 UTCEPSS rescore
2026-06-11 13:58 UTCEPSS rescore
2026-06-10 22:17 UTCEPSS rescore
2026-06-10 13:21 UTCEPSS rescore
2026-06-10 13:21 UTCEPSS rescore
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

Show 14 more

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
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-29 23:33 UTCEG score recompute
2026-05-29 23:33 UTCGHSA enrichment
2026-05-29 13:43 UTCEPSS rescore
2026-05-29 13:43 UTCEPSS rescore

Frequently asked(5)

What is CVE-2023-21480?

CVE-2023-21480 is a high vulnerability published on September 3, 2025. Improper input validation vulnerability in CertByte prior to SMR Apr-2023 Release 1 allows local attackers to launch privileged activities.

When was CVE-2023-21480 disclosed?

CVE-2023-21480 was first published in the National Vulnerability Database on September 3, 2025, with the most recent update on September 19, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-21480 actively exploited?

CVE-2023-21480 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-21480?

CVE-2023-21480 has a CVSS v3 base score of 8.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 7.8.

How do I remediate CVE-2023-21480?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-21480, 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

Explore the affected products and dependency analysis for CVE-2023-21480

Explore →

Is Your Infrastructure Affected by CVE-2023-21480?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2023-21480

📅 Published

🔄 Last Modified

🔗 References (1)