CVE-2023-39281

Name: CVE-2023-39281
Creator: NVD / NIST
Published: 2023-11-01T22:15:08.547+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.49%

Last modified Jun 17, 2026

CVE-2023-39281 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 0.49% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

0.49%

38.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Insyde	Insydeh2o	05.45.24.0039
Insyde	Insydeh2o	05.44.45.0017
Insyde	Insydeh2o	05.44.34.0055
Insyde	Insydeh2o	05.53.28.0013
Insyde	Insydeh2o	05.45.38.0005
Insyde	Insydeh2o	05.53.23.0011
Insyde	Insydeh2o	05.53.23.0014
Insyde	Insydeh2o	05.53.22.0008
Insyde	Insydeh2o	05.44.30.0022
Insyde	Insydeh2o	05.43.06.0021
Insyde	Insydeh2o	05.42.37.0031

References

https://www.insyde.com/security-pledgeVendor Advisory
https://www.insyde.com/security-pledge/SA-2023054Vendor Advisory
https://www.insyde.com/security-pledgeVendor Advisory
https://www.insyde.com/security-pledge/SA-2023054Vendor Advisory

Timeline

Published: Nov 1, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-39281?

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.

How severe is CVE-2023-39281?

CVE-2023-39281 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.49% probability of exploitation in the next 30 days.

How do I fix CVE-2023-39281?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-39281?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST