CVE-2023-39283

Name: CVE-2023-39283
Creator: NVD / NIST
Published: 2023-11-02T22:15:09.07+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.19%

Last modified Jun 17, 2026

CVE-2023-39283 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. An SMM memory corruption vulnerability in the SMM driver (SMRAM write) in CsmInt10HookSmm in Insyde InsydeH2O with kernel 5.0 through 5.5 allows attackers to send arbitrary data to SMM which could lead to privilege escalation.. EPSS estimates a 0.19% chance of exploitation in the next 30 days.

Description

An SMM memory corruption vulnerability in the SMM driver (SMRAM write) in CsmInt10HookSmm in Insyde InsydeH2O with kernel 5.0 through 5.5 allows attackers to send arbitrary data to SMM which could lead to privilege escalation.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.19%

9.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Insyde	Insydeh2o	>= 5.0, <= 5.5
Insyde	Insydeh2o	5.5.05.53.22
Insyde	Insydeh2o	5.6
Insyde	Insydeh2o	5.6.05.60.22

References

https://www.insyde.com/security-pledgeNot Applicable
https://www.insyde.com/security-pledge/SA-2023055Vendor Advisory
https://www.insyde.com/security-pledgeNot Applicable
https://www.insyde.com/security-pledge/SA-2023055Vendor Advisory

Timeline

Published: Nov 2, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-39283?

How severe is CVE-2023-39283?

CVE-2023-39283 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.19% probability of exploitation in the next 30 days.

How do I fix CVE-2023-39283?

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-2023-39283?

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

Scan your code now

Source: NVD / NIST