CVE-2020-5956

moderate-risk

Published 2022-01-05

An issue was discovered in SdLegacySmm in Insyde InsydeH2O with kernel 5.1 before 05.15.11, 5.2 before 05.25.11, 5.3 before 05.34.11, and 5.4 before 05.42.11. The software SMI handler allows untrusted external input because it does not verify CommBuffer.

Do I need to act?

0.28% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 7.5/10 High

NETWORK / LOW complexity

Affected Products (1)

Insydeh2O

Affected Vendors

Insyde

References (4)

Third Party Advisory https://security.netapp.com/advisory/ntap-20220223-0001/

Vendor Advisory https://www.insyde.com/security-pledge

Third Party Advisory https://security.netapp.com/advisory/ntap-20220223-0001/

Vendor Advisory https://www.insyde.com/security-pledge

/ 100

moderate-risk

Severity 26/34 · High

Exploitability 1/34 · Minimal

Exposure 5/34 · Minimal