What’s Vulnerable › Vulnerabilities

CVE-2021-41842

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-01-06 · updated 2026-06-17

Description

An issue was discovered in AtaLegacySmm in the kernel 5.0 before 05.08.46, 5.1 before 05.16.46, 5.2 before 05.26.46, 5.3 before 05.35.46, 5.4 before 05.43.46, and 5.5 before 05.51.45 in Insyde InsydeH2O. Code execution can occur because the SMI handler lacks a CommBuffer check.

Affected products

• Insydeh2O: from 5.0 before 05.08.46; from 5.1 before 05.16.46; from 5.2 before 05.26.46; from 5.3 before 05.35.46; from 5.4 (excl.) before 05.43.46; from 5.5 before 05.51.45 — fixed in 05.08.46, 05.16.46, 05.26.46, 05.35.46, 05.43.46, 05.51.45

How to fix

Upgrade to a fixed version: Insydeh2O 05.08.46, 05.16.46, 05.26.46, 05.35.46. Check the vendor advisory for mitigations.

References

• https://security.netapp.com/advisory/ntap-20220223-0002/
• https://www.insyde.com/security-pledge
• https://security.netapp.com/advisory/ntap-20220223-0002/
• https://www.insyde.com/security-pledge

Get alerted when CVE-2021-41842 or the next vulnerability affects your stack