Vulnerability Details : CVE-2021-41839
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.
Vulnerability category: Memory Corruption
Products affected by CVE-2021-41839
- cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*
- cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*
- cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*
- cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*
- cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-41839
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-41839
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.6
|
MEDIUM | AV:L/AC:L/Au:N/C:P/I:P/A:P |
3.9
|
6.4
|
NIST | |
|
8.2
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H |
1.5
|
6.0
|
NIST |
CWE ids for CVE-2021-41839
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-41839
-
https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf
Third Party Advisory
-
https://security.netapp.com/advisory/ntap-20220217-0016/
CVE-2021-41839 InsydeH20 Vulnerability in NetApp Products | NetApp Product SecurityThird Party Advisory
-
https://www.insyde.com/security-pledge
Insyde's Security Pledge | Insyde SoftwareVendor Advisory
-
https://www.insyde.com/security-pledge/SA-2022020
Insyde Security Advisory 2022020 | Insyde SoftwareVendor Advisory
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