High severity · published Jan 5, 2022
CVE-2020-5956
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
7.5
CVSS
0.8%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 57% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IN
Insydeh2o · Insyde
5.2 before 5.25.11; 5.1 before 05.15.11; 5.3 before 05.34.11; 5.4 before 05.42.11 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-5956
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-5956
Third Party Advisory
https://security.netapp.com/advisory/ntap-20220223-0001/
Vendor Advisory
https://www.insyde.com/security-pledge
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