CVE-2021-41839

8.2 highEPSS 0.3%

High (8.2) in insyde insydeh2o. EPSS 0.3% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

8.2 high

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

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 19% of CVEs (scores of 2026-10-31)
CWE: CWE-119
Published: 2022-02-03
Modified: 2026-08-11
Record from: the NVD, synced 2026-10-19

Affected

insyde:insydeh2o

References

https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf
https://security.netapp.com/advisory/ntap-20220217-0016/
https://www.insyde.com/security-pledge
https://www.insyde.com/security-pledge/SA-2022020
https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf

Check your stack JSON