What’s Vulnerable › Vulnerabilities

CVE-2021-41841

• Severity: high (CVSS 8.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-02-03 · updated 2026-08-11
• Weakness: CWE-829

Description

An issue was discovered in AhciBusDxe in the kernel 5.0 through 5.5 in Insyde InsydeH2O. There is an SMM callout that allows an attacker to access the System Management Mode and execute arbitrary code. This occurs because of Inclusion of Functionality from an Untrusted Control Sphere.

Affected products

• Insydeh2O: from 5.0 before 5.08.29; from 5.1 before 5.16.29; from 5.2 before 5.26.29; from 5.3 before 5.35.29; from 5.4 before 5.43.29; from 5.5 before 5.51.29 — fixed in 5.08.29, 5.16.29, 5.26.29, 5.35.29, 5.43.29, 5.51.29

How to fix

Upgrade to a fixed version: Insydeh2O 5.08.29, 5.16.29, 5.26.29, 5.35.29. Check the vendor advisory for mitigations.

References

• https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf
• https://security.netapp.com/advisory/ntap-20220217-0012/
• https://www.insyde.com/security-pledge
• https://www.insyde.com/security-pledge/SA-2022019
• https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf
• https://security.netapp.com/advisory/ntap-20220217-0012/
• https://www.insyde.com/security-pledge
• https://www.insyde.com/security-pledge/SA-2022019
• https://www.kb.cert.org/vuls/id/796611
• https://cert-portal.siemens.com/productcert/html/ssa-306654.html

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