High severity8.2NVD Advisory· Published Feb 3, 2022· Updated Aug 11, 2026
CVE-2021-41837
CVE-2021-41837
Description
An issue was discovered in AhciBusDxe 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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
17- cpe:2.3:o:siemens:simatic_field_pg_m5_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_field_pg_m6_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_ipc127e_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_ipc227g_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_ipc277g_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_ipc327g_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_ipc377g_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_ipc427e_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_ipc477e_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_ipc627e_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_ipc647e_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_ipc677e_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_ipc847e_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_itp1000_firmware:*:*:*:*:*:*:*:*
- Insyde/InsydeH2Odescription
Patches
Vulnerability mechanics
References
6- cert-portal.siemens.com/productcert/pdf/ssa-306654.pdfnvdThird Party Advisory
- security.netapp.com/advisory/ntap-20220222-0003/nvdThird Party Advisory
- www.insyde.com/security-pledgenvdVendor Advisory
- www.insyde.com/security-pledge/SA-2022024nvdVendor Advisory
- cert-portal.siemens.com/productcert/html/ssa-306654.htmlnvd
- www.kb.cert.org/vuls/id/796611nvd
News mentions
0No linked articles in our index yet.