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CVE-2021-33627 Details

Description

An issue was discovered in Insyde InsydeH2O Kernel 5.0 before 05.09.11, 5.1 before 05.17.11, 5.2 before 05.27.11, 5.3 before 05.36.11, 5.4 before 05.44.11, and 5.5 before 05.52.11 affecting FwBlockServiceSmm. Software SMI services that use the Communicate() function of the EFI_SMM_COMMUNICATION_PROTOCOL do not check whether the address of the buffer is valid, which allows use of SMRAM, MMIO, or OS kernel addresses.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:8.2 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://cert-portal.siemens.com/productcert/html/ssa-306654.html	siemens-SADP
https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf	CVE	Third Party Advisory
https://security.netapp.com/advisory/ntap-20220222-0002/	CVE	Third Party Advisory
https://www.insyde.com/security-pledge	CVE	Vendor Advisory
https://www.insyde.com/security-pledge/SA-2022022	CVE	Vendor Advisory
https://www.kb.cert.org/vuls/id/796611	CVE
https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf	[email protected]	Third Party Advisory
https://security.netapp.com/advisory/ntap-20220222-0002/	[email protected]	Third Party Advisory
https://www.insyde.com/security-pledge	[email protected]	Vendor Advisory
https://www.insyde.com/security-pledge/SA-2022022	[email protected]	Vendor Advisory

see all 10 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-119	Improper Restriction of Operations within the Bounds of a Memory Buffer	[email protected]

Affected Products

Product	Versions
insyde insydeh2o	>= 5.0, < 5.08.29 >= 5.1, < 5.16.29 >= 5.2, < 5.26.29 >= 5.3, < 5.35.29
CPE cpe:2.3:a:insyde:insydeh2o:::::::: Remediation No remediation found in references.
siemens simatic field pg m5 firmware	All versions
CPE cpe:2.3:o:siemens:simatic_field_pg_m5_firmware:::::::: Remediation No remediation found in references.
siemens simatic field pg m5	All versions
CPE cpe:2.3:h:siemens:simatic_field_pg_m5:-:::::::* Remediation No remediation found in references.
siemens simatic field pg m6 firmware	All versions
CPE cpe:2.3:o:siemens:simatic_field_pg_m6_firmware:::::::: Remediation No remediation found in references.
siemens simatic field pg m6	All versions
CPE cpe:2.3:h:siemens:simatic_field_pg_m6:-:::::::* Remediation No remediation found in references.
siemens simatic ipc127e firmware	All versions
CPE cpe:2.3:o:siemens:simatic_ipc127e_firmware:::::::: Remediation No remediation found in references.
siemens simatic ipc127e	All versions
CPE cpe:2.3:h:siemens:simatic_ipc127e:-:::::::* Remediation No remediation found in references.
siemens simatic ipc227g firmware	All versions
CPE cpe:2.3:o:siemens:simatic_ipc227g_firmware:::::::: Remediation No remediation found in references.
siemens simatic ipc227g	All versions
CPE cpe:2.3:h:siemens:simatic_ipc227g:-:::::::* Remediation No remediation found in references.
siemens simatic ipc277g firmware	All versions
CPE cpe:2.3:o:siemens:simatic_ipc277g_firmware:::::::: Remediation No remediation found in references.
siemens simatic ipc277g	All versions
CPE cpe:2.3:h:siemens:simatic_ipc277g:-:::::::* Remediation No remediation found in references.
siemens simatic ipc327g firmware	All versions
CPE cpe:2.3:o:siemens:simatic_ipc327g_firmware:::::::: Remediation No remediation found in references.
siemens simatic ipc327g	All versions
CPE cpe:2.3:h:siemens:simatic_ipc327g:-:::::::* Remediation No remediation found in references.
siemens simatic ipc377g firmware	All versions
CPE cpe:2.3:o:siemens:simatic_ipc377g_firmware:::::::: Remediation No remediation found in references.
siemens simatic ipc377g	All versions
CPE cpe:2.3:h:siemens:simatic_ipc377g:-:::::::* Remediation No remediation found in references.
siemens simatic ipc427e firmware	All versions
CPE cpe:2.3:o:siemens:simatic_ipc427e_firmware:::::::: Remediation No remediation found in references.
siemens simatic ipc427e	All versions
CPE cpe:2.3:h:siemens:simatic_ipc427e:-:::::::* Remediation No remediation found in references.
siemens simatic ipc477e firmware	All versions
CPE cpe:2.3:o:siemens:simatic_ipc477e_firmware:::::::: Remediation No remediation found in references.
siemens simatic ipc477e	All versions
CPE cpe:2.3:h:siemens:simatic_ipc477e:-:::::::* Remediation No remediation found in references.
siemens simatic ipc627e firmware	All versions
CPE cpe:2.3:o:siemens:simatic_ipc627e_firmware:::::::: Remediation No remediation found in references.
siemens simatic ipc627e	All versions
CPE cpe:2.3:h:siemens:simatic_ipc627e:-:::::::* Remediation No remediation found in references.
siemens simatic ipc647e firmware	All versions
CPE cpe:2.3:o:siemens:simatic_ipc647e_firmware:::::::: Remediation No remediation found in references.
siemens simatic ipc647e	All versions
CPE cpe:2.3:h:siemens:simatic_ipc647e:-:::::::* Remediation No remediation found in references.
siemens simatic ipc677e firmware	All versions
CPE cpe:2.3:o:siemens:simatic_ipc677e_firmware:::::::: Remediation No remediation found in references.
siemens simatic ipc677e	All versions
CPE cpe:2.3:h:siemens:simatic_ipc677e:-:::::::* Remediation No remediation found in references.
siemens simatic ipc847e firmware	All versions
CPE cpe:2.3:o:siemens:simatic_ipc847e_firmware:::::::: Remediation No remediation found in references.
siemens simatic ipc847e	All versions
CPE cpe:2.3:h:siemens:simatic_ipc847e:-:::::::* Remediation No remediation found in references.
siemens simatic itp1000 firmware	All versions
CPE cpe:2.3:o:siemens:simatic_itp1000_firmware:::::::: Remediation No remediation found in references.
siemens simatic itp1000	All versions
CPE cpe:2.3:h:siemens:simatic_itp1000:-:::::::* Remediation No remediation found in references.

Change History

10 change records found show changes

Date	Action	Recorded By
Aug 11, 2026	CVE Modified	siemens-SADP
Jun 17, 2026	CVE Modified	[email protected]
Nov 4, 2025	CVE Modified	CVE
Nov 21, 2024	CVE Modified	CVE
Jul 22, 2024	CVE Modified	[email protected]
May 14, 2024	CVE Modified	[email protected]
Mar 1, 2022	Modified Analysis	[email protected]
Feb 24, 2022	CVE Modified	[email protected]
Feb 9, 2022	Initial Analysis	[email protected]
Feb 9, 2022	CVE Modified	[email protected]

CVE-2021-33627 Details

Description

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References to Advisories, Solutions, and Tools

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