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Critical severity · published Nov 3, 2021
CVE-2020-5955
An issue was discovered in Int15MicrocodeSmm in Insyde InsydeH2O before 2021-10-14 on Intel client chipsets
9.8
CVSS
1.4%
EPSS
No
On KEV
Description
An issue was discovered in Int15MicrocodeSmm in Insyde InsydeH2O before 2021-10-14 on Intel client chipsets. A caller may be able to escalate privileges.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 73% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IU
Insydeh2o Uefi Bios · Insyde
before 05.32.30.0001; before 05.41.35.0001; before 05.42.11.0026; before 05.04.21.0068; before 05.42.09.0003; before 05.21.51.0040; +22 more · source: NVD
Affected product
IU
Insydeh2o Uefi Bios
Insyde
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-5955
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-5955
Third Party Advisory
https://security.netapp.com/advisory/ntap-20220223-0003/
Product
https://www.insyde.com/products
Vendor Advisory
https://www.insyde.com/security-pledge/SA-2021002