CVE-2023-39281

CRITICALNVD 9.89.8—

9.8

A stack buffer overflow vulnerability discovered in AsfSecureBootDxe in Insyde InsydeH2O with kernel 5.0 through 5.5 allows attackers to run arbitrary code execution during the DXE phase.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 48.9%
KEV: Not listed

Published

November 1, 2023

Last Modified

November 21, 2024

References (4)

cve@mitrehttps://www.insyde.com/security-pledge
cve@mitrehttps://www.insyde.com/security-pledge/SA-2023054
af854a3a-2127-422b-91ae-364da2661108https://www.insyde.com/security-pledge
af854a3a-2127-422b-91ae-364da2661108https://www.insyde.com/security-pledge/SA-2023054

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

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2026-05-26 07:18 UTCepss_batch

Frequently asked(5)

What is CVE-2023-39281?

CVE-2023-39281 is a critical vulnerability published on November 1, 2023. A stack buffer overflow vulnerability discovered in AsfSecureBootDxe in Insyde InsydeH2O with kernel 5.0 through 5.5 allows attackers to run arbitrary code execution during the DXE phase.

When was CVE-2023-39281 disclosed?

CVE-2023-39281 was first published in the National Vulnerability Database on November 1, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-39281 actively exploited?

CVE-2023-39281 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 48.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-39281?

CVE-2023-39281 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2023-39281?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-39281, 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-2023-39281

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(2)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-39281?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (4)

Frequently asked(5)

Related CVEs(same CWE)