What is the vulnerability ID of this issue?

The vulnerability ID is CVE-2021-41839.

What is the severity of CVE-2021-41839?

The severity of CVE-2021-41839 is high with a score of 8.2.

What is the affected software for CVE-2021-41839?

The affected software for CVE-2021-41839 is InsydeH2O version 5.0 through 5.5.

What is the impact of exploiting CVE-2021-41839?

Exploiting CVE-2021-41839 could lead to escalating privileges and write fixed or predictable data to SMRAM.

Where can I find more information about CVE-2021-41839?

You can find more information about CVE-2021-41839 in the following references: [https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf](https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf), [https://security.netapp.com/advisory/ntap-20220217-0016/](https://security.netapp.com/advisory/ntap-20220217-0016/), [https://www.insyde.com/security-pledge](https://www.insyde.com/security-pledge).

Vulnerability/
CVE-2021-41839

high

8.2

CWE

119

3/2/2022

4/8/2024

CVE-2021-41839: Buffer Overflow

First published: Thu Feb 03 2022(Updated: )

An issue was discovered in NvmExpressDxe in the kernel 5.0 through 5.5 in Insyde InsydeH2O. Because of an Untrusted Pointer Dereference that causes SMM memory corruption, an attacker may be able to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.

Credit: cve@mitre.org cve@mitre.org

Affected Software	Affected Version	How to fix
Insyde InsydeH2O	>=5.1<5.16.25
Insyde InsydeH2O	>=5.2<5.26.25
Insyde InsydeH2O	>=5.3<5.35.25
Insyde InsydeH2O	>=5.4<5.43.25
Insyde InsydeH2O	>=5.5<5.51.25

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Frequently Asked Questions

What is the vulnerability ID of this issue?
The vulnerability ID is CVE-2021-41839.
What is the severity of CVE-2021-41839?
The severity of CVE-2021-41839 is high with a score of 8.2.
What is the affected software for CVE-2021-41839?
The affected software for CVE-2021-41839 is InsydeH2O version 5.0 through 5.5.
What is the impact of exploiting CVE-2021-41839?
Exploiting CVE-2021-41839 could lead to escalating privileges and write fixed or predictable data to SMRAM.
Where can I find more information about CVE-2021-41839?
You can find more information about CVE-2021-41839 in the following references: [https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf](https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf), [https://security.netapp.com/advisory/ntap-20220217-0016/](https://security.netapp.com/advisory/ntap-20220217-0016/), [https://www.insyde.com/security-pledge](https://www.insyde.com/security-pledge).

collector/nvd-api
collector/nvd-index
agent/weakness
agent/type
agent/event
agent/severity
agent/author
agent/references
agent/description
agent/last-modified-date
agent/softwarecombine
agent/first-publish-date
agent/tags
collector/mitre-cve
source/MITRE
vendor/insyde
canonical/insyde insydeh2o
version/insyde insydeh2o/5.1
version/insyde insydeh2o/5.2
version/insyde insydeh2o/5.3
version/insyde insydeh2o/5.4
version/insyde insydeh2o/5.5

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