High severity · published Feb 3, 2022
CVE-2021-43522
An issue was discovered in Insyde InsydeH2O with kernel 5.1 through 2021-11-08, 5.2 through 2021-11-08, and 5.3 through 2021-11-08
7.5
CVSS
0.3%
EPSS
No
On KEV
Description
An issue was discovered in Insyde InsydeH2O with kernel 5.1 through 2021-11-08, 5.2 through 2021-11-08, and 5.3 through 2021-11-08. A StorageSecurityCommandDxe SMM memory corruption vulnerability allows an attacker to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Attack vector
Local
Complexity
High
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 18% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IN
Insydeh2o · Insyde
5.1 before 5.14.34; 5.2 before 5.24.34; 5.3 before 5.33.34 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-43522
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-43522
Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf
Third Party Advisory
https://security.netapp.com/advisory/ntap-20220216-0003/
Vendor Advisory
https://www.insyde.com/security-pledge
www.kb.cert.org
https://www.kb.cert.org/vuls/id/796611
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-306654.html
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